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Finding the Fourth Proportional to 658,532.80, 987,799.20 and 445,956.40

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Solution

The fourth proportional to 658,532.80, 987,799.20 and 445,956.40 is: 668,934.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,532.80 : 987,799.20 = 445,956.40 : x
  2. Step 2: Convert to fraction form
    658,532.80/987,799.20 = 445,956.40/x
  3. Step 3: Cross multiply
    658,532.80x = 987,799.20 × 445,956.40
  4. Step 4: Simplify right side
    658,532.80x = 440,515,375,154.88
  5. Step 5: Solve for x
    x = 440,515,375,154.88/658,532.80
  6. Step 6: Final answer
    x = 668,934.60

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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.