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Finding the Fourth Proportional to 439,729.20, 658,816.20 and 372,855.60

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Solution

The fourth proportional to 439,729.20, 658,816.20 and 372,855.60 is: 558,624.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,729.20 : 658,816.20 = 372,855.60 : x
  2. Step 2: Convert to fraction form
    439,729.20/658,816.20 = 372,855.60/x
  3. Step 3: Cross multiply
    439,729.20x = 658,816.20 × 372,855.60
  4. Step 4: Simplify right side
    439,729.20x = 245,643,309,540.72
  5. Step 5: Solve for x
    x = 245,643,309,540.72/439,729.20
  6. Step 6: Final answer
    x = 558,624.06

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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.