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Finding the Fourth Proportional to 605,093.80, 907,640.70 and 437,132.20

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Solution

The fourth proportional to 605,093.80, 907,640.70 and 437,132.20 is: 655,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,093.80 : 907,640.70 = 437,132.20 : x
  2. Step 2: Convert to fraction form
    605,093.80/907,640.70 = 437,132.20/x
  3. Step 3: Cross multiply
    605,093.80x = 907,640.70 × 437,132.20
  4. Step 4: Simplify right side
    605,093.80x = 396,758,976,000.54
  5. Step 5: Solve for x
    x = 396,758,976,000.54/605,093.80
  6. Step 6: Final answer
    x = 655,698.30

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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.