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Finding the Fourth Proportional to 664,614.80, 996,922.20 and 327,816.80

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Solution

The fourth proportional to 664,614.80, 996,922.20 and 327,816.80 is: 491,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,614.80 : 996,922.20 = 327,816.80 : x
  2. Step 2: Convert to fraction form
    664,614.80/996,922.20 = 327,816.80/x
  3. Step 3: Cross multiply
    664,614.80x = 996,922.20 × 327,816.80
  4. Step 4: Simplify right side
    664,614.80x = 326,807,845,452.96
  5. Step 5: Solve for x
    x = 326,807,845,452.96/664,614.80
  6. Step 6: Final answer
    x = 491,725.20

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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.