Finding the Fourth Proportional to 664,275,488.60, 996,413,232.90 and 615,902,547.80
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Solution
The fourth proportional to 664,275,488.60, 996,413,232.90 and 615,902,547.80 is: 923,853,821.70
Step by Step Solution
- Step 1: Write the proportion equation
664,275,488.60 : 996,413,232.90 = 615,902,547.80 : x - Step 2: Convert to fraction form
664,275,488.60/996,413,232.90 = 615,902,547.80/x - Step 3: Cross multiply
664,275,488.60x = 996,413,232.90 × 615,902,547.80 - Step 4: Simplify right side
664,275,488.60x = 613,693,448,804,744,704 - Step 5: Solve for x
x = 613,693,448,804,744,704/664,275,488.60 - Step 6: Final answer
x = 923,853,821.70
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.