Finding the Fourth Proportional to 636,487.74, 878,292.99 and 378,343.98
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Solution
The fourth proportional to 636,487.74, 878,292.99 and 378,343.98 is: 522,078.97
Step by Step Solution
- Step 1: Write the proportion equation
636,487.74 : 878,292.99 = 378,343.98 : x - Step 2: Convert to fraction form
636,487.74/878,292.99 = 378,343.98/x - Step 3: Cross multiply
636,487.74x = 878,292.99 × 378,343.98 - Step 4: Simplify right side
636,487.74x = 332,296,865,442.70 - Step 5: Solve for x
x = 332,296,865,442.70/636,487.74 - Step 6: Final answer
x = 522,078.97
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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.