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Finding the Fourth Proportional to 664,414.84, 995,922.42 and 331,291

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Solution

The fourth proportional to 664,414.84, 995,922.42 and 331,291 is: 496,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,414.84 : 995,922.42 = 331,291 : x
  2. Step 2: Convert to fraction form
    664,414.84/995,922.42 = 331,291/x
  3. Step 3: Cross multiply
    664,414.84x = 995,922.42 × 331,291
  4. Step 4: Simplify right side
    664,414.84x = 329,940,134,444.22
  5. Step 5: Solve for x
    x = 329,940,134,444.22/664,414.84
  6. Step 6: Final answer
    x = 496,587.55

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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.