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Finding the Fourth Proportional to 605,092.80, 907,639.20 and 437,131.20

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Solution

The fourth proportional to 605,092.80, 907,639.20 and 437,131.20 is: 655,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,092.80 : 907,639.20 = 437,131.20 : x
  2. Step 2: Convert to fraction form
    605,092.80/907,639.20 = 437,131.20/x
  3. Step 3: Cross multiply
    605,092.80x = 907,639.20 × 437,131.20
  4. Step 4: Simplify right side
    605,092.80x = 396,757,412,663.04
  5. Step 5: Solve for x
    x = 396,757,412,663.04/605,092.80
  6. Step 6: Final answer
    x = 655,696.80

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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.