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Finding the Fourth Proportional to 658,005.08, 987,007.55 and 358,737.30

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Solution

The fourth proportional to 658,005.08, 987,007.55 and 358,737.30 is: 538,105.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,005.08 : 987,007.55 = 358,737.30 : x
  2. Step 2: Convert to fraction form
    658,005.08/987,007.55 = 358,737.30/x
  3. Step 3: Cross multiply
    658,005.08x = 987,007.55 × 358,737.30
  4. Step 4: Simplify right side
    658,005.08x = 354,076,421,772.93
  5. Step 5: Solve for x
    x = 354,076,421,772.93/658,005.08
  6. Step 6: Final answer
    x = 538,105.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.