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Finding the Fourth Proportional to 664,606.80, 996,910.20 and 486,147.60

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Solution

The fourth proportional to 664,606.80, 996,910.20 and 486,147.60 is: 729,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,606.80 : 996,910.20 = 486,147.60 : x
  2. Step 2: Convert to fraction form
    664,606.80/996,910.20 = 486,147.60/x
  3. Step 3: Cross multiply
    664,606.80x = 996,910.20 × 486,147.60
  4. Step 4: Simplify right side
    664,606.80x = 484,645,501,145.52
  5. Step 5: Solve for x
    x = 484,645,501,145.52/664,606.80
  6. Step 6: Final answer
    x = 729,221.40

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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.