Home / 512,145,835.20-768,220,745.94-123,968,042.91

Finding the Fourth Proportional to 512,145,835.20, 768,220,745.94 and 123,968,042.91

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Solution

The fourth proportional to 512,145,835.20, 768,220,745.94 and 123,968,042.91 is: 185,952,546.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,145,835.20 : 768,220,745.94 = 123,968,042.91 : x
  2. Step 2: Convert to fraction form
    512,145,835.20/768,220,745.94 = 123,968,042.91/x
  3. Step 3: Cross multiply
    512,145,835.20x = 768,220,745.94 × 123,968,042.91
  4. Step 4: Simplify right side
    512,145,835.20x = 95,234,822,397,042,128
  5. Step 5: Solve for x
    x = 95,234,822,397,042,128/512,145,835.20
  6. Step 6: Final answer
    x = 185,952,546.82

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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.