Home / 663,551,998.20-995,327,997.30-421,488,228.60

Finding the Fourth Proportional to 663,551,998.20, 995,327,997.30 and 421,488,228.60

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Solution

The fourth proportional to 663,551,998.20, 995,327,997.30 and 421,488,228.60 is: 632,232,342.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,551,998.20 : 995,327,997.30 = 421,488,228.60 : x
  2. Step 2: Convert to fraction form
    663,551,998.20/995,327,997.30 = 421,488,228.60/x
  3. Step 3: Cross multiply
    663,551,998.20x = 995,327,997.30 × 421,488,228.60
  4. Step 4: Simplify right side
    663,551,998.20x = 419,519,034,457,962,560
  5. Step 5: Solve for x
    x = 419,519,034,457,962,560/663,551,998.20
  6. Step 6: Final answer
    x = 632,232,342.90

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Double scale
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Similar ratio
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1.5x scale

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.