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Finding the Fourth Proportional to 981,491.80, 1,377,237.80 and 981,491.80

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Solution

The fourth proportional to 981,491.80, 1,377,237.80 and 981,491.80 is: 1,377,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,491.80 : 1,377,237.80 = 981,491.80 : x
  2. Step 2: Convert to fraction form
    981,491.80/1,377,237.80 = 981,491.80/x
  3. Step 3: Cross multiply
    981,491.80x = 1,377,237.80 × 981,491.80
  4. Step 4: Simplify right side
    981,491.80x = 1,351,747,607,350.04
  5. Step 5: Solve for x
    x = 1,351,747,607,350.04/981,491.80
  6. Step 6: Final answer
    x = 1,377,237.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.