Least Common Multiple of 28/42, 60/76, 947/90

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Know Least Common Multiple of fractions 28/42, 60/76, 947/90 quickly i.e. 198870 the smallest number that is divisible by all numbers by taking the help of LCM of Fractions Calculator.

Least Common Multiple (LCM) of 28/42, 60/76, 947/90 is 198870.

LCM(28/42, 60/76, 947/90) = 198870

LCM of 28/42, 60/76, 947/90

Enter two or more fractions separated by "commas"

Ex: 2/3, 5/7 or 3/5, 5/9, 7/3

LCM of:

Least Common Multiple of 28/42,60/76,947/90

Given numbers are 28/42,60/76,947/90

Formula to find LCM of Fractions is

LCM = LCM of Numerators/GCF of Denominators

As per the formula LCM of Fractions let’s split into two parts and find the LCM of Numerators and GCF of Denominators

In the given fractions LCM of Numerators means LCM of 28,60,947

Least Common Multiple of Numerators i.e. LCM of 28,60,947 is 397740.

GCF of Denominators means GCF of 42,76,90 as per the given fractions.

GCF of 42,76,90 is 2 as it is the largest common factor for these numbers.

Lets's calculate LCM of 28,60,947

LCM of Fractions 28/42,60/76,947/90 is 198870

2 28, 60, 947
2 14, 30, 947
7, 15, 947

∴ So the LCM of the given numbers is 2 x 2 x 7 x 15 x 947 = 397740

Least Common Multiple of 28,60,947 with GCF Formula

Least Common Multiple of 28,60,947 with GCF Formula

The formula of LCM is LCM(a1,a2,a3....,an) = ( a1 × a2 × a3 × .... × an) / GCF(a1,a2,a3....,an) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 28,60,947 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(28,60,947) = 1

common factors(in case of two or more numbers have common factors) = 4

GCF(28,60,947) x common factors =1 x 4 = 4

LCM(28,60,947) = ( 28 × 60 × 947 ) / 4

LCM(28,60,947) = 1590960 / 4

LCM(28,60,947) = 397740


Lets's calculate GCF of 42,76,90

2 42, 76, 90
21, 38, 45

∴ So the GCF of the given numbers is 2 = 2

Thus LCM of Fractions = LCM of Numerators/GCF of Denominators = 397740/2

Therefore the LCM of Fractions 28/42,60/76,947/90 is 198870

Greatest Common Factor of 42,76,90 By Matching Biggest Common Factor Method

Greatest Common Factor of 42,76,90 By Matching Biggest Common Factor Method

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 76

List of positive integer factors of 76 that divides 76 without a remainder.

1,2,4,19,38,76

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Greatest Common Factor

We found the factors 42,76,90 . The biggest common factor number is the GCF number.
So the greatest common factor 42,76,90 is 2.


LCM of Fractions Calculation Examples

Here are some samples of LCM of Fractions calculations.

LCM of Fractions Calculation Examples

Here are some samples of LCM of Fractions calculations.

Frequently Asked Questions on Fractional LCM of 28/42, 60/76, 947/90

1. How to find LCM in Fractions?

Answer: LCM of fractions can be found using the simple formula LCM of Fractions = LCM of Numerators/GCF of Denominators.

2. What is the LCM of Fractions for 28/42, 60/76, 947/90?

Answer: LCM of Numerators as per given numbers 28/42, 60/76, 947/90 is

LCM of Numerators i.e. for 28,60,947 is 397740

GCF of denominators i.e. for 42,76,90 is 2.

Thus, LCM of Fractions is 198870.Finally, LCM of Fractions for 28/42, 60/76, 947/90 is 198870.