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Finding the Fourth Proportional to 664,568.76, 996,969.96 and 285,722.04

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Solution

The fourth proportional to 664,568.76, 996,969.96 and 285,722.04 is: 428,633.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,568.76 : 996,969.96 = 285,722.04 : x
  2. Step 2: Convert to fraction form
    664,568.76/996,969.96 = 285,722.04/x
  3. Step 3: Cross multiply
    664,568.76x = 996,969.96 × 285,722.04
  4. Step 4: Simplify right side
    664,568.76x = 284,856,290,789.92
  5. Step 5: Solve for x
    x = 284,856,290,789.92/664,568.76
  6. Step 6: Final answer
    x = 428,633.29

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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.