Home / 442,436.40-663,136.20-331,498.80

Finding the Fourth Proportional to 442,436.40, 663,136.20 and 331,498.80

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Solution

The fourth proportional to 442,436.40, 663,136.20 and 331,498.80 is: 496,859.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,436.40 : 663,136.20 = 331,498.80 : x
  2. Step 2: Convert to fraction form
    442,436.40/663,136.20 = 331,498.80/x
  3. Step 3: Cross multiply
    442,436.40x = 663,136.20 × 331,498.80
  4. Step 4: Simplify right side
    442,436.40x = 219,828,854,536.56
  5. Step 5: Solve for x
    x = 219,828,854,536.56/442,436.40
  6. Step 6: Final answer
    x = 496,859.78

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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.