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Finding the Fourth Proportional to 610,979.28, 843,138.65 and 339,044.97

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Solution

The fourth proportional to 610,979.28, 843,138.65 and 339,044.97 is: 467,874.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,979.28 : 843,138.65 = 339,044.97 : x
  2. Step 2: Convert to fraction form
    610,979.28/843,138.65 = 339,044.97/x
  3. Step 3: Cross multiply
    610,979.28x = 843,138.65 × 339,044.97
  4. Step 4: Simplify right side
    610,979.28x = 285,861,916,599.87
  5. Step 5: Solve for x
    x = 285,861,916,599.87/610,979.28
  6. Step 6: Final answer
    x = 467,874.98

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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.