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Finding the Fourth Proportional to 664,509.10, 996,909.45 and 327,711.10

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Solution

The fourth proportional to 664,509.10, 996,909.45 and 327,711.10 is: 491,638.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,509.10 : 996,909.45 = 327,711.10 : x
  2. Step 2: Convert to fraction form
    664,509.10/996,909.45 = 327,711.10/x
  3. Step 3: Cross multiply
    664,509.10x = 996,909.45 × 327,711.10
  4. Step 4: Simplify right side
    664,509.10x = 326,698,292,459.90
  5. Step 5: Solve for x
    x = 326,698,292,459.90/664,509.10
  6. Step 6: Final answer
    x = 491,638.55

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Similar ratio
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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.