Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,394/900,000,000,134
- The integer number above the bar is called numerator: 779,422,863,394
- The integer number below the bar is called denominator: 900,000,000,134
- 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 = 779,422,863,394 ÷ 900,000,000,134
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:
779,422,863,394 = 2 × 7 × 199 × 279,764,129
779,422,863,394 is a composite number.
900,000,000,134 = 2 × 53 × 199 × 1,279 × 33,359
900,000,000,134 is a composite number.
779,422,863,394/900,000,000,134 =
(779,422,863,394 ÷ 398) / (900,000,000,134 ÷ 398) =
1,958,348,903/2,261,306,533
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.
779,422,863,394/900,000,000,134 =
(2 × 7 × 199 × 279,764,129)/(2 × 53 × 199 × 1,279 × 33,359) =
((2 × 7 × 199 × 279,764,129) ÷ (2 × 199)) / ((2 × 53 × 199 × 1,279 × 33,359) ÷ (2 × 199)) =
(7 × 279,764,129)/(53 × 1,279 × 33,359) =
1,958,348,903/2,261,306,533
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
1,958,348,903/2,261,306,533 =
1,958,348,903 ÷ 2,261,306,533 =
0.866025403642 ≈
0.87