Home / 394,487.78-591,749.30-120,913.82

Finding the Fourth Proportional to 394,487.78, 591,749.30 and 120,913.82

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Solution

The fourth proportional to 394,487.78, 591,749.30 and 120,913.82 is: 181,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,487.78 : 591,749.30 = 120,913.82 : x
  2. Step 2: Convert to fraction form
    394,487.78/591,749.30 = 120,913.82/x
  3. Step 3: Cross multiply
    394,487.78x = 591,749.30 × 120,913.82
  4. Step 4: Simplify right side
    394,487.78x = 71,550,667,740.76
  5. Step 5: Solve for x
    x = 71,550,667,740.76/394,487.78
  6. Step 6: Final answer
    x = 181,376.13

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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.