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Finding the Fourth Proportional to 442,867.80, 664,301.70 and 324,769.80

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Solution

The fourth proportional to 442,867.80, 664,301.70 and 324,769.80 is: 487,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,867.80 : 664,301.70 = 324,769.80 : x
  2. Step 2: Convert to fraction form
    442,867.80/664,301.70 = 324,769.80/x
  3. Step 3: Cross multiply
    442,867.80x = 664,301.70 × 324,769.80
  4. Step 4: Simplify right side
    442,867.80x = 215,745,130,248.66
  5. Step 5: Solve for x
    x = 215,745,130,248.66/442,867.80
  6. Step 6: Final answer
    x = 487,154.70

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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.