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Finding the Fourth Proportional to 658,164.55, 908,357.26 and 378,755.97

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Solution

The fourth proportional to 658,164.55, 908,357.26 and 378,755.97 is: 522,735.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,164.55 : 908,357.26 = 378,755.97 : x
  2. Step 2: Convert to fraction form
    658,164.55/908,357.26 = 378,755.97/x
  3. Step 3: Cross multiply
    658,164.55x = 908,357.26 × 378,755.97
  4. Step 4: Simplify right side
    658,164.55x = 344,045,737,807.48
  5. Step 5: Solve for x
    x = 344,045,737,807.48/658,164.55
  6. Step 6: Final answer
    x = 522,735.14

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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.