Home / 394,607.27-591,916.37-128,369.18

Finding the Fourth Proportional to 394,607.27, 591,916.37 and 128,369.18

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Solution

The fourth proportional to 394,607.27, 591,916.37 and 128,369.18 is: 192,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,607.27 : 591,916.37 = 128,369.18 : x
  2. Step 2: Convert to fraction form
    394,607.27/591,916.37 = 128,369.18/x
  3. Step 3: Cross multiply
    394,607.27x = 591,916.37 × 128,369.18
  4. Step 4: Simplify right side
    394,607.27x = 75,983,819,045.48
  5. Step 5: Solve for x
    x = 75,983,819,045.48/394,607.27
  6. Step 6: Final answer
    x = 192,555.55

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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.