Home / 279,431,086,978.98-419,217,167,305.89-77,972,652,914.90

Finding the Fourth Proportional to 279,431,086,978.98, 419,217,167,305.89 and 77,972,652,914.90

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Solution

The fourth proportional to 279,431,086,978.98, 419,217,167,305.89 and 77,972,652,914.90 is: 116,978,662,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,431,086,978.98 : 419,217,167,305.89 = 77,972,652,914.90 : x
  2. Step 2: Convert to fraction form
    279,431,086,978.98/419,217,167,305.89 = 77,972,652,914.90/x
  3. Step 3: Cross multiply
    279,431,086,978.98x = 419,217,167,305.89 × 77,972,652,914.90
  4. Step 4: Simplify right side
    279,431,086,978.98x = 32,687,474,682,307,633,217,536
  5. Step 5: Solve for x
    x = 32,687,474,682,307,633,217,536/279,431,086,978.98
  6. Step 6: Final answer
    x = 116,978,662,022.55

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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.