Finding the Fourth Proportional to 664,275,498.60, 996,413,247.90 and 615,902,557.80
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Solution
The fourth proportional to 664,275,498.60, 996,413,247.90 and 615,902,557.80 is: 923,853,836.70
Step by Step Solution
- Step 1: Write the proportion equation
664,275,498.60 : 996,413,247.90 = 615,902,557.80 : x - Step 2: Convert to fraction form
664,275,498.60/996,413,247.90 = 615,902,557.80/x - Step 3: Cross multiply
664,275,498.60x = 996,413,247.90 × 615,902,557.80 - Step 4: Simplify right side
664,275,498.60x = 613,693,468,007,415,424 - Step 5: Solve for x
x = 613,693,468,007,415,424/664,275,498.60 - Step 6: Final answer
x = 923,853,836.70
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Double scale
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Similar ratio
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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.