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Finding the Fourth Proportional to 603,279.36, 903,540.88 and 287,957.70

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Solution

The fourth proportional to 603,279.36, 903,540.88 and 287,957.70 is: 431,278.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,279.36 : 903,540.88 = 287,957.70 : x
  2. Step 2: Convert to fraction form
    603,279.36/903,540.88 = 287,957.70/x
  3. Step 3: Cross multiply
    603,279.36x = 903,540.88 × 287,957.70
  4. Step 4: Simplify right side
    603,279.36x = 260,181,553,660.78
  5. Step 5: Solve for x
    x = 260,181,553,660.78/603,279.36
  6. Step 6: Final answer
    x = 431,278.73

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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.