Home / 439,286.40-658,411.20-328,348.80

Finding the Fourth Proportional to 439,286.40, 658,411.20 and 328,348.80

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Solution

The fourth proportional to 439,286.40, 658,411.20 and 328,348.80 is: 492,135.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,286.40 : 658,411.20 = 328,348.80 : x
  2. Step 2: Convert to fraction form
    439,286.40/658,411.20 = 328,348.80/x
  3. Step 3: Cross multiply
    439,286.40x = 658,411.20 × 328,348.80
  4. Step 4: Simplify right side
    439,286.40x = 216,188,527,426.56
  5. Step 5: Solve for x
    x = 216,188,527,426.56/439,286.40
  6. Step 6: Final answer
    x = 492,135.72

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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.