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Finding the Fourth Proportional to 664,226.80, 996,340.20 and 327,319.45

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Solution

The fourth proportional to 664,226.80, 996,340.20 and 327,319.45 is: 490,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,226.80 : 996,340.20 = 327,319.45 : x
  2. Step 2: Convert to fraction form
    664,226.80/996,340.20 = 327,319.45/x
  3. Step 3: Cross multiply
    664,226.80x = 996,340.20 × 327,319.45
  4. Step 4: Simplify right side
    664,226.80x = 326,121,526,276.89
  5. Step 5: Solve for x
    x = 326,121,526,276.89/664,226.80
  6. Step 6: Final answer
    x = 490,979.18

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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.