Home / 394,626.21-591,946.61-128,385.69

Finding the Fourth Proportional to 394,626.21, 591,946.61 and 128,385.69

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Solution

The fourth proportional to 394,626.21, 591,946.61 and 128,385.69 is: 192,580.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,626.21 : 591,946.61 = 128,385.69 : x
  2. Step 2: Convert to fraction form
    394,626.21/591,946.61 = 128,385.69/x
  3. Step 3: Cross multiply
    394,626.21x = 591,946.61 × 128,385.69
  4. Step 4: Simplify right side
    394,626.21x = 75,997,473,326.08
  5. Step 5: Solve for x
    x = 75,997,473,326.08/394,626.21
  6. Step 6: Final answer
    x = 192,580.91

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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.