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Finding the Fourth Proportional to 605,893.20, 908,839.80 and 437,056.80

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Solution

The fourth proportional to 605,893.20, 908,839.80 and 437,056.80 is: 655,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,893.20 : 908,839.80 = 437,056.80 : x
  2. Step 2: Convert to fraction form
    605,893.20/908,839.80 = 437,056.80/x
  3. Step 3: Cross multiply
    605,893.20x = 908,839.80 × 437,056.80
  4. Step 4: Simplify right side
    605,893.20x = 397,214,614,700.64
  5. Step 5: Solve for x
    x = 397,214,614,700.64/605,893.20
  6. Step 6: Final answer
    x = 655,585.20

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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.