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Finding the Fourth Proportional to 548,073.80, 820,781.90 and 379,120.04

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Solution

The fourth proportional to 548,073.80, 820,781.90 and 379,120.04 is: 567,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,073.80 : 820,781.90 = 379,120.04 : x
  2. Step 2: Convert to fraction form
    548,073.80/820,781.90 = 379,120.04/x
  3. Step 3: Cross multiply
    548,073.80x = 820,781.90 × 379,120.04
  4. Step 4: Simplify right side
    548,073.80x = 311,174,866,759.28
  5. Step 5: Solve for x
    x = 311,174,866,759.28/548,073.80
  6. Step 6: Final answer
    x = 567,760.89

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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.