Home / 442,856,999.20-664,281,999.60-115,331,879.20

Finding the Fourth Proportional to 442,856,999.20, 664,281,999.60 and 115,331,879.20

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Solution

The fourth proportional to 442,856,999.20, 664,281,999.60 and 115,331,879.20 is: 172,996,907.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,856,999.20 : 664,281,999.60 = 115,331,879.20 : x
  2. Step 2: Convert to fraction form
    442,856,999.20/664,281,999.60 = 115,331,879.20/x
  3. Step 3: Cross multiply
    442,856,999.20x = 664,281,999.60 × 115,331,879.20
  4. Step 4: Simplify right side
    442,856,999.20x = 76,612,891,332,601,648
  5. Step 5: Solve for x
    x = 76,612,891,332,601,648/442,856,999.20
  6. Step 6: Final answer
    x = 172,996,907.51

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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.