Home / 1,993,147.70-2,989,721.55-1,981,337.90

Finding the Fourth Proportional to 1,993,147.70, 2,989,721.55 and 1,981,337.90

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Solution

The fourth proportional to 1,993,147.70, 2,989,721.55 and 1,981,337.90 is: 2,972,006.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,147.70 : 2,989,721.55 = 1,981,337.90 : x
  2. Step 2: Convert to fraction form
    1,993,147.70/2,989,721.55 = 1,981,337.90/x
  3. Step 3: Cross multiply
    1,993,147.70x = 2,989,721.55 × 1,981,337.90
  4. Step 4: Simplify right side
    1,993,147.70x = 5,923,648,617,461.74
  5. Step 5: Solve for x
    x = 5,923,648,617,461.74/1,993,147.70
  6. Step 6: Final answer
    x = 2,972,006.85

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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.