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 349,768,978
We can find the LCD of numbers 349,768,978 by the prime factorization method or by applying the LCD formula.
The LCD of 349,768,978 is 43689216.
2 | 349, 768, 978 |
3 | 349, 384, 489 |
349, 128, 163 |
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 3 x 349 x 128 x 163 = 43689216
Thus, we have determined that the LCD of 349,768,978 is 43689216
The LCD formula is LCD(a,b) = ( a x b) / GCF(a,b)
Step1:
Find the GCF of 349 and 768. To find the GCF, list down the factors of 349 and 768 and select the highest factor that appears in both lists of factors.
349 : [1, 349]
768 : [1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 768]
From this, we can see that the GCF of 349 and 768 is 1.
Now, put this into the LCD formula.
LCD(349, 768) = ( 349 x 768 ) / 1
LCD(349, 768) = 268032 / 1
LCD(349, 768) = 268032
Step2:
Find the GCF of 268032 and 978. To find the GCF, list down the factors of 268032 and 978 and select the highest factor that appears in both lists of factors.
268032 : [1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 349, 384, 698, 768, 1047, 1396, 2094, 2792, 4188, 5584, 8376, 11168, 16752, 22336, 33504, 44672, 67008, 89344, 134016, 268032]
978 : [1, 2, 3, 6, 163, 326, 489, 978]
From this, we can see that the GCF of 268032 and 978 is 6.
Now, put this into the LCD formula.
LCD(268032, 978) = ( 268032 x 978 ) / 6
LCD(268032, 978) = 262135296 / 6
LCD(268032, 978) = 43689216
LCD of 349,768,978 is 43689216
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 .