Home / 1,399,229.47-1,930,787.76-787,371.58

Finding the Fourth Proportional to 1,399,229.47, 1,930,787.76 and 787,371.58

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Solution

The fourth proportional to 1,399,229.47, 1,930,787.76 and 787,371.58 is: 1,086,488.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,229.47 : 1,930,787.76 = 787,371.58 : x
  2. Step 2: Convert to fraction form
    1,399,229.47/1,930,787.76 = 787,371.58/x
  3. Step 3: Cross multiply
    1,399,229.47x = 1,930,787.76 × 787,371.58
  4. Step 4: Simplify right side
    1,399,229.47x = 1,520,247,409,235.86
  5. Step 5: Solve for x
    x = 1,520,247,409,235.86/1,399,229.47
  6. Step 6: Final answer
    x = 1,086,488.99

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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.