Finding the Fourth Proportional to 917,999,613.94, 1,266,884,414.84 and 516,239,805.20
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Solution
The fourth proportional to 917,999,613.94, 1,266,884,414.84 and 516,239,805.20 is: 712,436,207.59
Step by Step Solution
- Step 1: Write the proportion equation
917,999,613.94 : 1,266,884,414.84 = 516,239,805.20 : x - Step 2: Convert to fraction form
917,999,613.94/1,266,884,414.84 = 516,239,805.20/x - Step 3: Cross multiply
917,999,613.94x = 1,266,884,414.84 × 516,239,805.20 - Step 4: Simplify right side
917,999,613.94x = 654,016,163,527,917,568 - Step 5: Solve for x
x = 654,016,163,527,917,568/917,999,613.94 - Step 6: Final answer
x = 712,436,207.59
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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.