Home / 512,422,406.80-768,633,610.20-487,340,141.20

Finding the Fourth Proportional to 512,422,406.80, 768,633,610.20 and 487,340,141.20

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Solution

The fourth proportional to 512,422,406.80, 768,633,610.20 and 487,340,141.20 is: 731,010,211.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,422,406.80 : 768,633,610.20 = 487,340,141.20 : x
  2. Step 2: Convert to fraction form
    512,422,406.80/768,633,610.20 = 487,340,141.20/x
  3. Step 3: Cross multiply
    512,422,406.80x = 768,633,610.20 × 487,340,141.20
  4. Step 4: Simplify right side
    512,422,406.80x = 374,586,012,125,933,760
  5. Step 5: Solve for x
    x = 374,586,012,125,933,760/512,422,406.80
  6. Step 6: Final answer
    x = 731,010,211.80

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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.