LCD of 78, 120, 820 Calculator

Arrange the Inputs 78,120,820 in a horizontal line separated by commas and divide them with a prime number. Note the quotients in the next row and divide with quotients with prime numbers again. Continue the process until you have all co primes in the last.

As all the numbers left in the last row are co primes you need not do the common division process further.

To obtain the Least Common Denominator, multiply the prime numbers with which you have divided the given numbers and the co primes in the last row i.e. 2 x 2 x 3 x 5 x 13 x 2 x 41 = 63960

Therefore, LCD of 78,120,820 is 63960

Step1:

Let's calculate the LCD of first two numbers

The formula of LCD is LCD(a,b) = ( a x b) / GCF(a,b)

GCF(78, 120) = 6

LCD(78, 120) = ( 78 x 120 ) / 6

LCD(78, 120) = 9360 / 6

LCD(78, 120) = 1560

Step2:

Here we consider the LCD from the above i.e. 1560 as first number and the next as 820

The formula of LCD is LCD(a,b) = ( a x b) / GCF(a,b)

GCF(1560, 820) = 20

LCD(1560, 820) = ( 1560 x 820 ) / 20

LCD(1560, 820) = 1279200 / 20

LCD(1560, 820) = 63960

LCD of 78,120,820 is 63960

Here are some samples of LCD of Numbers calculations.

• LCD of 29, 574, 658
• LCD of 25, 564, 892
• LCD of 55, 743, 572
• LCD of 25, 242, 419
• LCD of 82, 505, 454

1. What is the LCD of 78, 120, 820?

Answer: LCD of 78, 120, 820 is 63960.

2. How to find LCD of 78, 120, 820 on a calculator?

Answer: You can find LCD of 78, 120, 820 by simply giving the inputs in the input field and clicking on the Calculator button next to it to get the concerned Least Common Denominator.

3. How to Find the LCD of 78, 120, 820?

Least Common Denominator of 78, 120, 820.

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors with last row quotient of common division that is LCD(78, 120, 820) = 63960.