Home / 815,358.79-1,223,135.45-394,332.13

Finding the Fourth Proportional to 815,358.79, 1,223,135.45 and 394,332.13

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Solution

The fourth proportional to 815,358.79, 1,223,135.45 and 394,332.13 is: 591,545.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,358.79 : 1,223,135.45 = 394,332.13 : x
  2. Step 2: Convert to fraction form
    815,358.79/1,223,135.45 = 394,332.13/x
  3. Step 3: Cross multiply
    815,358.79x = 1,223,135.45 × 394,332.13
  4. Step 4: Simplify right side
    815,358.79x = 482,321,599,189.67
  5. Step 5: Solve for x
    x = 482,321,599,189.67/815,358.79
  6. Step 6: Final answer
    x = 591,545.23

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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.