LCD of Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
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 489,426,142
We can find the LCD of numbers 489,426,142 by the prime factorization method or by applying the LCD formula.
The LCD of 489,426,142 is 69438.
Method to Find Least Common Denominator of 489,426,142 with Prime Factorization
| 2 | 489, 426, 142 |
| 3 | 489, 213, 71 |
| 71 | 163, 71, 71 |
| 163, 1, 1 |
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 71 x 163 x 1 x 1 = 69438
Thus, we have determined that the LCD of 489,426,142 is 69438
The LCD formula is LCD(a,b) = ( a x b) / GCF(a,b)
Step1:
Find the GCF of 489 and 426. To find the GCF, list down the factors of 489 and 426 and select the highest factor that appears in both lists of factors.
489 : [1, 3, 163, 489]
426 : [1, 2, 3, 6, 71, 142, 213, 426]
From this, we can see that the GCF of 489 and 426 is 3.
Now, put this into the LCD formula.
LCD(489, 426) = ( 489 x 426 ) / 3
LCD(489, 426) = 208314 / 3
LCD(489, 426) = 69438
Step2:
Find the GCF of 69438 and 142. To find the GCF, list down the factors of 69438 and 142 and select the highest factor that appears in both lists of factors.
69438 : [1, 2, 3, 6, 71, 142, 163, 213, 326, 426, 489, 978, 11573, 23146, 34719, 69438]
142 : [1, 2, 71, 142]
From this, we can see that the GCF of 69438 and 142 is 142.
Now, put this into the LCD formula.
LCD(69438, 142) = ( 69438 x 142 ) / 142
LCD(69438, 142) = 9860196 / 142
LCD(69438, 142) = 69438
LCD of 489,426,142 is 69438
LCD of Numbers Calculation Examples
Here are some samples of LCD of Numbers calculations.
Frequently Asked Questions on LCD of
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 .