Home / 667,823.20-1,002,512.40-432,145.60

Finding the Fourth Proportional to 667,823.20, 1,002,512.40 and 432,145.60

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Solution

The fourth proportional to 667,823.20, 1,002,512.40 and 432,145.60 is: 648,721.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,823.20 : 1,002,512.40 = 432,145.60 : x
  2. Step 2: Convert to fraction form
    667,823.20/1,002,512.40 = 432,145.60/x
  3. Step 3: Cross multiply
    667,823.20x = 1,002,512.40 × 432,145.60
  4. Step 4: Simplify right side
    667,823.20x = 433,231,322,605.44
  5. Step 5: Solve for x
    x = 433,231,322,605.44/667,823.20
  6. Step 6: Final answer
    x = 648,721.58

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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.