Home / 279,431,086,989.62-419,217,167,321.82-77,972,652,925.49

Finding the Fourth Proportional to 279,431,086,989.62, 419,217,167,321.82 and 77,972,652,925.49

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Solution

The fourth proportional to 279,431,086,989.62, 419,217,167,321.82 and 77,972,652,925.49 is: 116,978,662,038.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,431,086,989.62 : 419,217,167,321.82 = 77,972,652,925.49 : x
  2. Step 2: Convert to fraction form
    279,431,086,989.62/419,217,167,321.82 = 77,972,652,925.49/x
  3. Step 3: Cross multiply
    279,431,086,989.62x = 419,217,167,321.82 × 77,972,652,925.49
  4. Step 4: Simplify right side
    279,431,086,989.62x = 32,687,474,687,991,342,956,544
  5. Step 5: Solve for x
    x = 32,687,474,687,991,342,956,544/279,431,086,989.62
  6. Step 6: Final answer
    x = 116,978,662,038.44

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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.