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Finding the Fourth Proportional to 1,366,882.78, 1,869,905.33 and 1,361,125.57

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Solution

The fourth proportional to 1,366,882.78, 1,869,905.33 and 1,361,125.57 is: 1,862,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366,882.78 : 1,869,905.33 = 1,361,125.57 : x
  2. Step 2: Convert to fraction form
    1,366,882.78/1,869,905.33 = 1,361,125.57/x
  3. Step 3: Cross multiply
    1,366,882.78x = 1,869,905.33 × 1,361,125.57
  4. Step 4: Simplify right side
    1,366,882.78x = 2,545,175,958,142.29
  5. Step 5: Solve for x
    x = 2,545,175,958,142.29/1,366,882.78
  6. Step 6: Final answer
    x = 1,862,029.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.