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Finding the Fourth Proportional to 442,993.30, 664,489.95 and 396,337.30

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Solution

The fourth proportional to 442,993.30, 664,489.95 and 396,337.30 is: 594,505.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,993.30 : 664,489.95 = 396,337.30 : x
  2. Step 2: Convert to fraction form
    442,993.30/664,489.95 = 396,337.30/x
  3. Step 3: Cross multiply
    442,993.30x = 664,489.95 × 396,337.30
  4. Step 4: Simplify right side
    442,993.30x = 263,362,152,660.14
  5. Step 5: Solve for x
    x = 263,362,152,660.14/442,993.30
  6. Step 6: Final answer
    x = 594,505.95

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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.