Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,474/900,000,000,152
- The integer number above the bar is called numerator: 779,422,863,474
- The integer number below the bar is called denominator: 900,000,000,152
- 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 = 779,422,863,474 ÷ 900,000,000,152
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:
779,422,863,474 = 2 × 3 × 3 × 3 × 1,279 × 11,285,189 = 2 × 33 × 1,279 × 11,285,189
779,422,863,474 is a composite number.
Written with exponents:
900,000,000,152 = 2 × 2 × 2 × 11 × 36,493 × 280,253 = 23 × 11 × 36,493 × 280,253
900,000,000,152 is a composite number.
779,422,863,474/900,000,000,152 =
(779,422,863,474 ÷ 2) / (900,000,000,152 ÷ 2) =
389,711,431,737/450,000,000,076
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.
779,422,863,474/900,000,000,152 =
(2 × 33 × 1,279 × 11,285,189)/(23 × 11 × 36,493 × 280,253) =
((2 × 33 × 1,279 × 11,285,189) ÷ 2) / ((23 × 11 × 36,493 × 280,253) ÷ 2) =
(33 × 1,279 × 11,285,189)/(22 × 11 × 36,493 × 280,253) =
389,711,431,737/450,000,000,076
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
389,711,431,737/450,000,000,076 =
389,711,431,737 ÷ 450,000,000,076 =
0.866025403714 ≈
0.87