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Finding the Fourth Proportional to 664,560.80, 996,841.20 and 486,101.60

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Solution

The fourth proportional to 664,560.80, 996,841.20 and 486,101.60 is: 729,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,560.80 : 996,841.20 = 486,101.60 : x
  2. Step 2: Convert to fraction form
    664,560.80/996,841.20 = 486,101.60/x
  3. Step 3: Cross multiply
    664,560.80x = 996,841.20 × 486,101.60
  4. Step 4: Simplify right side
    664,560.80x = 484,566,102,265.92
  5. Step 5: Solve for x
    x = 484,566,102,265.92/664,560.80
  6. Step 6: Final answer
    x = 729,152.40

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Double scale
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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.