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Finding the Fourth Proportional to 591,915.92, 817,066.10 and 387,979.98

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Solution

The fourth proportional to 591,915.92, 817,066.10 and 387,979.98 is: 535,557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,915.92 : 817,066.10 = 387,979.98 : x
  2. Step 2: Convert to fraction form
    591,915.92/817,066.10 = 387,979.98/x
  3. Step 3: Cross multiply
    591,915.92x = 817,066.10 × 387,979.98
  4. Step 4: Simplify right side
    591,915.92x = 317,005,289,136.68
  5. Step 5: Solve for x
    x = 317,005,289,136.68/591,915.92
  6. Step 6: Final answer
    x = 535,557.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.