Home / 442,972.70-664,459.05-323,999.90

Finding the Fourth Proportional to 442,972.70, 664,459.05 and 323,999.90

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Solution

The fourth proportional to 442,972.70, 664,459.05 and 323,999.90 is: 485,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,972.70 : 664,459.05 = 323,999.90 : x
  2. Step 2: Convert to fraction form
    442,972.70/664,459.05 = 323,999.90/x
  3. Step 3: Cross multiply
    442,972.70x = 664,459.05 × 323,999.90
  4. Step 4: Simplify right side
    442,972.70x = 215,284,665,754.10
  5. Step 5: Solve for x
    x = 215,284,665,754.10/442,972.70
  6. Step 6: Final answer
    x = 485,999.85

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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.