Home / 419,327,998.20-628,991,997.30-296,883,991.80

Finding the Fourth Proportional to 419,327,998.20, 628,991,997.30 and 296,883,991.80

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Solution

The fourth proportional to 419,327,998.20, 628,991,997.30 and 296,883,991.80 is: 445,325,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,327,998.20 : 628,991,997.30 = 296,883,991.80 : x
  2. Step 2: Convert to fraction form
    419,327,998.20/628,991,997.30 = 296,883,991.80/x
  3. Step 3: Cross multiply
    419,327,998.20x = 628,991,997.30 × 296,883,991.80
  4. Step 4: Simplify right side
    419,327,998.20x = 186,737,654,968,678,816
  5. Step 5: Solve for x
    x = 186,737,654,968,678,816/419,327,998.20
  6. Step 6: Final answer
    x = 445,325,987.70

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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.