Finding the Fourth Proportional to 661,442,705.76, 991,497,096 and 415,974,769.68
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Solution
The fourth proportional to 661,442,705.76, 991,497,096 and 415,974,769.68 is: 623,542,708.32
Step by Step Solution
- Step 1: Write the proportion equation
661,442,705.76 : 991,497,096 = 415,974,769.68 : x - Step 2: Convert to fraction form
661,442,705.76/991,497,096 = 415,974,769.68/x - Step 3: Cross multiply
661,442,705.76x = 991,497,096 × 415,974,769.68 - Step 4: Simplify right side
661,442,705.76x = 412,437,776,146,988,864 - Step 5: Solve for x
x = 412,437,776,146,988,864/661,442,705.76 - Step 6: Final answer
x = 623,542,708.32
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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.