Home / 1,188,920.62-1,783,515.66-431,118.64

Finding the Fourth Proportional to 1,188,920.62, 1,783,515.66 and 431,118.64

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Solution

The fourth proportional to 1,188,920.62, 1,783,515.66 and 431,118.64 is: 646,726.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,920.62 : 1,783,515.66 = 431,118.64 : x
  2. Step 2: Convert to fraction form
    1,188,920.62/1,783,515.66 = 431,118.64/x
  3. Step 3: Cross multiply
    1,188,920.62x = 1,783,515.66 × 431,118.64
  4. Step 4: Simplify right side
    1,188,920.62x = 768,906,845,757.90
  5. Step 5: Solve for x
    x = 768,906,845,757.90/1,188,920.62
  6. Step 6: Final answer
    x = 646,726.81

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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.