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Finding the Fourth Proportional to 439,672.48, 659,286.96 and 313,240.48

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Solution

The fourth proportional to 439,672.48, 659,286.96 and 313,240.48 is: 469,702.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,672.48 : 659,286.96 = 313,240.48 : x
  2. Step 2: Convert to fraction form
    439,672.48/659,286.96 = 313,240.48/x
  3. Step 3: Cross multiply
    439,672.48x = 659,286.96 × 313,240.48
  4. Step 4: Simplify right side
    439,672.48x = 206,515,363,808.14
  5. Step 5: Solve for x
    x = 206,515,363,808.14/439,672.48
  6. Step 6: Final answer
    x = 469,702.73

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1.5x scale

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.