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Finding the Fourth Proportional to 439,749.70, 659,624.55 and 415,255.30

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Solution

The fourth proportional to 439,749.70, 659,624.55 and 415,255.30 is: 622,882.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,749.70 : 659,624.55 = 415,255.30 : x
  2. Step 2: Convert to fraction form
    439,749.70/659,624.55 = 415,255.30/x
  3. Step 3: Cross multiply
    439,749.70x = 659,624.55 × 415,255.30
  4. Step 4: Simplify right side
    439,749.70x = 273,912,590,397.62
  5. Step 5: Solve for x
    x = 273,912,590,397.62/439,749.70
  6. Step 6: Final answer
    x = 622,882.95

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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.