Home / 1,391,230.62-2,087,145.18-431,667

Finding the Fourth Proportional to 1,391,230.62, 2,087,145.18 and 431,667

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Solution

The fourth proportional to 1,391,230.62, 2,087,145.18 and 431,667 is: 647,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,230.62 : 2,087,145.18 = 431,667 : x
  2. Step 2: Convert to fraction form
    1,391,230.62/2,087,145.18 = 431,667/x
  3. Step 3: Cross multiply
    1,391,230.62x = 2,087,145.18 × 431,667
  4. Step 4: Simplify right side
    1,391,230.62x = 900,951,698,415.06
  5. Step 5: Solve for x
    x = 900,951,698,415.06/1,391,230.62
  6. Step 6: Final answer
    x = 647,593.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.