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Finding the Fourth Proportional to 664,404.90, 995,512.95 and 383,432.10

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Solution

The fourth proportional to 664,404.90, 995,512.95 and 383,432.10 is: 574,516.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,404.90 : 995,512.95 = 383,432.10 : x
  2. Step 2: Convert to fraction form
    664,404.90/995,512.95 = 383,432.10/x
  3. Step 3: Cross multiply
    664,404.90x = 995,512.95 × 383,432.10
  4. Step 4: Simplify right side
    664,404.90x = 381,711,620,995.70
  5. Step 5: Solve for x
    x = 381,711,620,995.70/664,404.90
  6. Step 6: Final answer
    x = 574,516.57

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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.