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Finding the Fourth Proportional to 655,983.20, 984,112.88 and 371,809.91

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Solution

The fourth proportional to 655,983.20, 984,112.88 and 371,809.91 is: 557,793.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,983.20 : 984,112.88 = 371,809.91 : x
  2. Step 2: Convert to fraction form
    655,983.20/984,112.88 = 371,809.91/x
  3. Step 3: Cross multiply
    655,983.20x = 984,112.88 × 371,809.91
  4. Step 4: Simplify right side
    655,983.20x = 365,902,914,563.03
  5. Step 5: Solve for x
    x = 365,902,914,563.03/655,983.20
  6. Step 6: Final answer
    x = 557,793.12

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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.