Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,413/900,000,000,131
- The integer number above the bar is called numerator: 779,422,863,413
- The integer number below the bar is called denominator: 900,000,000,131
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 779,422,863,413 ÷ 900,000,000,131
To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
779,422,863,413 = 47 × 59 × 2,549 × 110,269
779,422,863,413 is a composite number.
900,000,000,131 = 47 × 389 × 49,226,057
900,000,000,131 is a composite number.
779,422,863,413/900,000,000,131 =
(779,422,863,413 ÷ 47) / (900,000,000,131 ÷ 47) =
16,583,465,179/19,148,936,173
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
779,422,863,413/900,000,000,131 =
(47 × 59 × 2,549 × 110,269)/(47 × 389 × 49,226,057) =
((47 × 59 × 2,549 × 110,269) ÷ 47) / ((47 × 389 × 49,226,057) ÷ 47) =
(59 × 2,549 × 110,269)/(389 × 49,226,057) =
16,583,465,179/19,148,936,173
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
16,583,465,179/19,148,936,173 =
16,583,465,179 ÷ 19,148,936,173 =
0.866025403666 ≈
0.87