Home / 812,110.60-1,218,165.90-664,488.10

Finding the Fourth Proportional to 812,110.60, 1,218,165.90 and 664,488.10

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Solution

The fourth proportional to 812,110.60, 1,218,165.90 and 664,488.10 is: 996,732.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,110.60 : 1,218,165.90 = 664,488.10 : x
  2. Step 2: Convert to fraction form
    812,110.60/1,218,165.90 = 664,488.10/x
  3. Step 3: Cross multiply
    812,110.60x = 1,218,165.90 × 664,488.10
  4. Step 4: Simplify right side
    812,110.60x = 809,456,744,375.79
  5. Step 5: Solve for x
    x = 809,456,744,375.79/812,110.60
  6. Step 6: Final answer
    x = 996,732.15

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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.