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Finding the Fourth Proportional to 659,428.20, 910,010.92 and 372,942.14

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Solution

The fourth proportional to 659,428.20, 910,010.92 and 372,942.14 is: 514,660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,428.20 : 910,010.92 = 372,942.14 : x
  2. Step 2: Convert to fraction form
    659,428.20/910,010.92 = 372,942.14/x
  3. Step 3: Cross multiply
    659,428.20x = 910,010.92 × 372,942.14
  4. Step 4: Simplify right side
    659,428.20x = 339,381,413,513.40
  5. Step 5: Solve for x
    x = 339,381,413,513.40/659,428.20
  6. Step 6: Final answer
    x = 514,660.15

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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.