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Finding the Fourth Proportional to 494,737.20, 742,105.80 and 317,590.20

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Solution

The fourth proportional to 494,737.20, 742,105.80 and 317,590.20 is: 476,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,737.20 : 742,105.80 = 317,590.20 : x
  2. Step 2: Convert to fraction form
    494,737.20/742,105.80 = 317,590.20/x
  3. Step 3: Cross multiply
    494,737.20x = 742,105.80 × 317,590.20
  4. Step 4: Simplify right side
    494,737.20x = 235,685,529,443.16
  5. Step 5: Solve for x
    x = 235,685,529,443.16/494,737.20
  6. Step 6: Final answer
    x = 476,385.30

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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.