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Finding the Fourth Proportional to 605,040.80, 907,561.20 and 437,079.20

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Solution

The fourth proportional to 605,040.80, 907,561.20 and 437,079.20 is: 655,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,040.80 : 907,561.20 = 437,079.20 : x
  2. Step 2: Convert to fraction form
    605,040.80/907,561.20 = 437,079.20/x
  3. Step 3: Cross multiply
    605,040.80x = 907,561.20 × 437,079.20
  4. Step 4: Simplify right side
    605,040.80x = 396,676,123,247.04
  5. Step 5: Solve for x
    x = 396,676,123,247.04/605,040.80
  6. Step 6: Final answer
    x = 655,618.80

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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.