Home / 1,431,993.76-1,976,183.44-787,372.96

Finding the Fourth Proportional to 1,431,993.76, 1,976,183.44 and 787,372.96

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Solution

The fourth proportional to 1,431,993.76, 1,976,183.44 and 787,372.96 is: 1,086,592.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,993.76 : 1,976,183.44 = 787,372.96 : x
  2. Step 2: Convert to fraction form
    1,431,993.76/1,976,183.44 = 787,372.96/x
  3. Step 3: Cross multiply
    1,431,993.76x = 1,976,183.44 × 787,372.96
  4. Step 4: Simplify right side
    1,431,993.76x = 1,555,993,404,655.78
  5. Step 5: Solve for x
    x = 1,555,993,404,655.78/1,431,993.76
  6. Step 6: Final answer
    x = 1,086,592.31

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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.