Home / 1,438,346.96-2,145,731.42-1,399,251.60

Finding the Fourth Proportional to 1,438,346.96, 2,145,731.42 and 1,399,251.60

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Solution

The fourth proportional to 1,438,346.96, 2,145,731.42 and 1,399,251.60 is: 2,087,408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,346.96 : 2,145,731.42 = 1,399,251.60 : x
  2. Step 2: Convert to fraction form
    1,438,346.96/2,145,731.42 = 1,399,251.60/x
  3. Step 3: Cross multiply
    1,438,346.96x = 2,145,731.42 × 1,399,251.60
  4. Step 4: Simplify right side
    1,438,346.96x = 3,002,418,122,605.27
  5. Step 5: Solve for x
    x = 3,002,418,122,605.27/1,438,346.96
  6. Step 6: Final answer
    x = 2,087,408.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.