Home / 1,998,162.18-2,756,834.28-1,222,984.90

Finding the Fourth Proportional to 1,998,162.18, 2,756,834.28 and 1,222,984.90

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Solution

The fourth proportional to 1,998,162.18, 2,756,834.28 and 1,222,984.90 is: 1,687,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,162.18 : 2,756,834.28 = 1,222,984.90 : x
  2. Step 2: Convert to fraction form
    1,998,162.18/2,756,834.28 = 1,222,984.90/x
  3. Step 3: Cross multiply
    1,998,162.18x = 2,756,834.28 × 1,222,984.90
  4. Step 4: Simplify right side
    1,998,162.18x = 3,371,566,689,350.29
  5. Step 5: Solve for x
    x = 3,371,566,689,350.29/1,998,162.18
  6. Step 6: Final answer
    x = 1,687,333.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.