Home / 442,442.40-663,145.20-331,504.80

Finding the Fourth Proportional to 442,442.40, 663,145.20 and 331,504.80

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Solution

The fourth proportional to 442,442.40, 663,145.20 and 331,504.80 is: 496,868.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,442.40 : 663,145.20 = 331,504.80 : x
  2. Step 2: Convert to fraction form
    442,442.40/663,145.20 = 331,504.80/x
  3. Step 3: Cross multiply
    442,442.40x = 663,145.20 × 331,504.80
  4. Step 4: Simplify right side
    442,442.40x = 219,835,816,896.96
  5. Step 5: Solve for x
    x = 219,835,816,896.96/442,442.40
  6. Step 6: Final answer
    x = 496,868.78

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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.