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Finding the Fourth Proportional to 689,269.52, 951,191.88 and 387,463.52

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Solution

The fourth proportional to 689,269.52, 951,191.88 and 387,463.52 is: 534,699.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,269.52 : 951,191.88 = 387,463.52 : x
  2. Step 2: Convert to fraction form
    689,269.52/951,191.88 = 387,463.52/x
  3. Step 3: Cross multiply
    689,269.52x = 951,191.88 × 387,463.52
  4. Step 4: Simplify right side
    689,269.52x = 368,552,154,020.22
  5. Step 5: Solve for x
    x = 368,552,154,020.22/689,269.52
  6. Step 6: Final answer
    x = 534,699.63

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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.