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Finding the Fourth Proportional to 529,414.56, 794,156.40 and 387,684

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Solution

The fourth proportional to 529,414.56, 794,156.40 and 387,684 is: 581,551.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,414.56 : 794,156.40 = 387,684 : x
  2. Step 2: Convert to fraction form
    529,414.56/794,156.40 = 387,684/x
  3. Step 3: Cross multiply
    529,414.56x = 794,156.40 × 387,684
  4. Step 4: Simplify right side
    529,414.56x = 307,881,729,777.60
  5. Step 5: Solve for x
    x = 307,881,729,777.60/529,414.56
  6. Step 6: Final answer
    x = 581,551.31

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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.