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Finding the Fourth Proportional to 524,186.70, 721,592.46 and 387,963.87

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Solution

The fourth proportional to 524,186.70, 721,592.46 and 387,963.87 is: 534,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,186.70 : 721,592.46 = 387,963.87 : x
  2. Step 2: Convert to fraction form
    524,186.70/721,592.46 = 387,963.87/x
  3. Step 3: Cross multiply
    524,186.70x = 721,592.46 × 387,963.87
  4. Step 4: Simplify right side
    524,186.70x = 279,951,803,344.42
  5. Step 5: Solve for x
    x = 279,951,803,344.42/524,186.70
  6. Step 6: Final answer
    x = 534,068.88

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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.