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Finding the Fourth Proportional to 624,387.78, 861,657.60 and 337,907.79

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Solution

The fourth proportional to 624,387.78, 861,657.60 and 337,907.79 is: 466,314.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,387.78 : 861,657.60 = 337,907.79 : x
  2. Step 2: Convert to fraction form
    624,387.78/861,657.60 = 337,907.79/x
  3. Step 3: Cross multiply
    624,387.78x = 861,657.60 × 337,907.79
  4. Step 4: Simplify right side
    624,387.78x = 291,160,815,352.70
  5. Step 5: Solve for x
    x = 291,160,815,352.70/624,387.78
  6. Step 6: Final answer
    x = 466,314.08

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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.