Home / 386,629,631.70-579,944,447.55-131,327,999.70

Finding the Fourth Proportional to 386,629,631.70, 579,944,447.55 and 131,327,999.70

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Solution

The fourth proportional to 386,629,631.70, 579,944,447.55 and 131,327,999.70 is: 196,991,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,629,631.70 : 579,944,447.55 = 131,327,999.70 : x
  2. Step 2: Convert to fraction form
    386,629,631.70/579,944,447.55 = 131,327,999.70/x
  3. Step 3: Cross multiply
    386,629,631.70x = 579,944,447.55 × 131,327,999.70
  4. Step 4: Simplify right side
    386,629,631.70x = 76,162,944,233,863,056
  5. Step 5: Solve for x
    x = 76,162,944,233,863,056/386,629,631.70
  6. Step 6: Final answer
    x = 196,991,999.55

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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.