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Finding the Fourth Proportional to 1,098,972.60, 1,648,458.90 and 673,819.80

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Solution

The fourth proportional to 1,098,972.60, 1,648,458.90 and 673,819.80 is: 1,010,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,972.60 : 1,648,458.90 = 673,819.80 : x
  2. Step 2: Convert to fraction form
    1,098,972.60/1,648,458.90 = 673,819.80/x
  3. Step 3: Cross multiply
    1,098,972.60x = 1,648,458.90 × 673,819.80
  4. Step 4: Simplify right side
    1,098,972.60x = 1,110,764,246,306.22
  5. Step 5: Solve for x
    x = 1,110,764,246,306.22/1,098,972.60
  6. Step 6: Final answer
    x = 1,010,729.70

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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.