Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,428/900,000,000,130
- The integer number above the bar is called numerator: 779,422,863,428
- The integer number below the bar is called denominator: 900,000,000,130
- 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 = 779,422,863,428 ÷ 900,000,000,130
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:
Written with exponents:
779,422,863,428 = 2 × 2 × 11 × 11 × 1,610,377,817 = 22 × 112 × 1,610,377,817
779,422,863,428 is a composite number.
Written with exponents:
900,000,000,130 = 2 × 5 × 7 × 11 × 11 × 2,579 × 41,201 = 2 × 5 × 7 × 112 × 2,579 × 41,201
900,000,000,130 is a composite number.
779,422,863,428/900,000,000,130 =
(779,422,863,428 ÷ 242) / (900,000,000,130 ÷ 242) =
3,220,755,634/3,719,008,265
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.
779,422,863,428/900,000,000,130 =
(22 × 112 × 1,610,377,817)/(2 × 5 × 7 × 112 × 2,579 × 41,201) =
((22 × 112 × 1,610,377,817) ÷ (2 × 112)) / ((2 × 5 × 7 × 112 × 2,579 × 41,201) ÷ (2 × 112)) =
(2 × 1,610,377,817)/(5 × 7 × 2,579 × 41,201) =
3,220,755,634/3,719,008,265
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
3,220,755,634/3,719,008,265 =
3,220,755,634 ÷ 3,719,008,265 =
0.866025403684 ≈
0.87