Finding the Fourth Proportional to 442,861,649.40, 664,292,474.10 and 212,775,252.60
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Solution
The fourth proportional to 442,861,649.40, 664,292,474.10 and 212,775,252.60 is: 319,162,878.90
Step by Step Solution
- Step 1: Write the proportion equation
442,861,649.40 : 664,292,474.10 = 212,775,252.60 : x - Step 2: Convert to fraction form
442,861,649.40/664,292,474.10 = 212,775,252.60/x - Step 3: Cross multiply
442,861,649.40x = 664,292,474.10 × 212,775,252.60 - Step 4: Simplify right side
442,861,649.40x = 141,344,998,976,906,464 - Step 5: Solve for x
x = 141,344,998,976,906,464/442,861,649.40 - Step 6: Final answer
x = 319,162,878.90
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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.