Read this article to figure out how to calculate the lowest common denominator of . Learn the two different methods that you can use to find the LCD: the prime factorization method and the LCD formula method. We will explain both these methods in detail so stick around until the very end to understand. Utilise our free LCD Calculator to avail the LCD of numbers easily.
Given numbers are 686,904,922
We can find the LCD of numbers 686,904,922 by the prime factorization method or by applying the LCD formula.
The LCD of 686,904,922 is 142943192.
2 | 686, 904, 922 |
343, 452, 461 |
As you can see, now we have to multiply the prime numbers on the left side with the co-primes at the bottom.
2 x 343 x 452 x 461 = 142943192
Thus, we have determined that the LCD of 686,904,922 is 142943192
The LCD formula is LCD(a,b) = ( a x b) / GCF(a,b)
Step1:
Find the GCF of 686 and 904. To find the GCF, list down the factors of 686 and 904 and select the highest factor that appears in both lists of factors.
686 : [1, 2, 7, 14, 49, 98, 343, 686]
904 : [1, 2, 4, 8, 113, 226, 452, 904]
From this, we can see that the GCF of 686 and 904 is 2.
Now, put this into the LCD formula.
LCD(686, 904) = ( 686 x 904 ) / 2
LCD(686, 904) = 620144 / 2
LCD(686, 904) = 310072
Step2:
Find the GCF of 310072 and 922. To find the GCF, list down the factors of 310072 and 922 and select the highest factor that appears in both lists of factors.
310072 : [1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 113, 196, 226, 343, 392, 452, 686, 791, 904, 1372, 1582, 2744, 3164, 5537, 6328, 11074, 22148, 38759, 44296, 77518, 155036, 310072]
922 : [1, 2, 461, 922]
From this, we can see that the GCF of 310072 and 922 is 2.
Now, put this into the LCD formula.
LCD(310072, 922) = ( 310072 x 922 ) / 2
LCD(310072, 922) = 285886384 / 2
LCD(310072, 922) = 142943192
LCD of 686,904,922 is 142943192
Here are some samples of LCD of Numbers calculations.
1. What is the LCD of ?
Answer: LCD of is .
2. How to find LCD of using prime factorization ?
Answer: Just keep dividing by prime numbers until only co-primes are left over. At that point, simply multiply the co-primes with the prime numbers on the left. The answer will be , the LCD.
3. How to Find the LCD of using LCD formula ?
Answer: The LCD formula is LCD(a,b) = ( a x b) / GCF(a,b).
You must first calculate the LCD OF and . Then, find the LCD of that answer and and so on. The answer will be , which is the LCD of .