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Finding the Fourth Proportional to 531,662.72, 736,862 and 521,709.44

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Solution

The fourth proportional to 531,662.72, 736,862 and 521,709.44 is: 723,067.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,662.72 : 736,862 = 521,709.44 : x
  2. Step 2: Convert to fraction form
    531,662.72/736,862 = 521,709.44/x
  3. Step 3: Cross multiply
    531,662.72x = 736,862 × 521,709.44
  4. Step 4: Simplify right side
    531,662.72x = 384,427,861,377.28
  5. Step 5: Solve for x
    x = 384,427,861,377.28/531,662.72
  6. Step 6: Final answer
    x = 723,067.18

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.