Home / 1,399,226.56-1,930,910.03-787,378.97

Finding the Fourth Proportional to 1,399,226.56, 1,930,910.03 and 787,378.97

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Solution

The fourth proportional to 1,399,226.56, 1,930,910.03 and 787,378.97 is: 1,086,570.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,226.56 : 1,930,910.03 = 787,378.97 : x
  2. Step 2: Convert to fraction form
    1,399,226.56/1,930,910.03 = 787,378.97/x
  3. Step 3: Cross multiply
    1,399,226.56x = 1,930,910.03 × 787,378.97
  4. Step 4: Simplify right side
    1,399,226.56x = 1,520,357,957,379.79
  5. Step 5: Solve for x
    x = 1,520,357,957,379.79/1,399,226.56
  6. Step 6: Final answer
    x = 1,086,570.25

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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.