Home / 663,561,620.20-995,342,430.30-421,497,850.60

Finding the Fourth Proportional to 663,561,620.20, 995,342,430.30 and 421,497,850.60

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Solution

The fourth proportional to 663,561,620.20, 995,342,430.30 and 421,497,850.60 is: 632,246,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,561,620.20 : 995,342,430.30 = 421,497,850.60 : x
  2. Step 2: Convert to fraction form
    663,561,620.20/995,342,430.30 = 421,497,850.60/x
  3. Step 3: Cross multiply
    663,561,620.20x = 995,342,430.30 × 421,497,850.60
  4. Step 4: Simplify right side
    663,561,620.20x = 419,534,694,982,430,336
  5. Step 5: Solve for x
    x = 419,534,694,982,430,336/663,561,620.20
  6. Step 6: Final answer
    x = 632,246,775.90

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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.