Home / 394,916.82-592,436.70-128,615.38

Finding the Fourth Proportional to 394,916.82, 592,436.70 and 128,615.38

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Solution

The fourth proportional to 394,916.82, 592,436.70 and 128,615.38 is: 192,943.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,916.82 : 592,436.70 = 128,615.38 : x
  2. Step 2: Convert to fraction form
    394,916.82/592,436.70 = 128,615.38/x
  3. Step 3: Cross multiply
    394,916.82x = 592,436.70 × 128,615.38
  4. Step 4: Simplify right side
    394,916.82x = 76,196,469,815.35
  5. Step 5: Solve for x
    x = 76,196,469,815.35/394,916.82
  6. Step 6: Final answer
    x = 192,943.09

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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.