Finding the Fourth Proportional to 721,606,651.44, 995,817,178.98 and 391,581,790.44
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Solution
The fourth proportional to 721,606,651.44, 995,817,178.98 and 391,581,790.44 is: 540,382,870.80
Step by Step Solution
- Step 1: Write the proportion equation
721,606,651.44 : 995,817,178.98 = 391,581,790.44 : x - Step 2: Convert to fraction form
721,606,651.44/995,817,178.98 = 391,581,790.44/x - Step 3: Cross multiply
721,606,651.44x = 995,817,178.98 × 391,581,790.44 - Step 4: Simplify right side
721,606,651.44x = 389,943,873,891,878,080 - Step 5: Solve for x
x = 389,943,873,891,878,080/721,606,651.44 - Step 6: Final answer
x = 540,382,870.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.