Finding the Fourth Proportional to 392,272,984.68, 541,374,981.85 and 292,981,427.79
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Solution
The fourth proportional to 392,272,984.68, 541,374,981.85 and 292,981,427.79 is: 404,342,948.27
Step by Step Solution
- Step 1: Write the proportion equation
392,272,984.68 : 541,374,981.85 = 292,981,427.79 : x - Step 2: Convert to fraction form
392,272,984.68/541,374,981.85 = 292,981,427.79/x - Step 3: Cross multiply
392,272,984.68x = 541,374,981.85 × 292,981,427.79 - Step 4: Simplify right side
392,272,984.68x = 158,612,815,152,198,368 - Step 5: Solve for x
x = 158,612,815,152,198,368/392,272,984.68 - Step 6: Final answer
x = 404,342,948.27
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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.