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Finding the Fourth Proportional to 389,630.70, 584,446.05 and 275,469.30

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Solution

The fourth proportional to 389,630.70, 584,446.05 and 275,469.30 is: 413,203.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,630.70 : 584,446.05 = 275,469.30 : x
  2. Step 2: Convert to fraction form
    389,630.70/584,446.05 = 275,469.30/x
  3. Step 3: Cross multiply
    389,630.70x = 584,446.05 × 275,469.30
  4. Step 4: Simplify right side
    389,630.70x = 160,996,944,281.27
  5. Step 5: Solve for x
    x = 160,996,944,281.27/389,630.70
  6. Step 6: Final answer
    x = 413,203.95

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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.