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Finding the Fourth Proportional to 664,482.80, 996,724.20 and 486,023.60

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Solution

The fourth proportional to 664,482.80, 996,724.20 and 486,023.60 is: 729,035.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,482.80 : 996,724.20 = 486,023.60 : x
  2. Step 2: Convert to fraction form
    664,482.80/996,724.20 = 486,023.60/x
  3. Step 3: Cross multiply
    664,482.80x = 996,724.20 × 486,023.60
  4. Step 4: Simplify right side
    664,482.80x = 484,431,483,891.12
  5. Step 5: Solve for x
    x = 484,431,483,891.12/664,482.80
  6. Step 6: Final answer
    x = 729,035.40

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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.