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Finding the Fourth Proportional to 665,855,998.60, 998,783,997.90 and 665,855,998.60

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Solution

The fourth proportional to 665,855,998.60, 998,783,997.90 and 665,855,998.60 is: 998,783,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,855,998.60 : 998,783,997.90 = 665,855,998.60 : x
  2. Step 2: Convert to fraction form
    665,855,998.60/998,783,997.90 = 665,855,998.60/x
  3. Step 3: Cross multiply
    665,855,998.60x = 998,783,997.90 × 665,855,998.60
  4. Step 4: Simplify right side
    665,855,998.60x = 665,046,316,307,404,800
  5. Step 5: Solve for x
    x = 665,046,316,307,404,800/665,855,998.60
  6. Step 6: Final answer
    x = 998,783,997.90

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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.