Home / 815,356.54-1,223,132.07-394,329.88

Finding the Fourth Proportional to 815,356.54, 1,223,132.07 and 394,329.88

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Solution

The fourth proportional to 815,356.54, 1,223,132.07 and 394,329.88 is: 591,541.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,356.54 : 1,223,132.07 = 394,329.88 : x
  2. Step 2: Convert to fraction form
    815,356.54/1,223,132.07 = 394,329.88/x
  3. Step 3: Cross multiply
    815,356.54x = 1,223,132.07 × 394,329.88
  4. Step 4: Simplify right side
    815,356.54x = 482,317,522,387.25
  5. Step 5: Solve for x
    x = 482,317,522,387.25/815,356.54
  6. Step 6: Final answer
    x = 591,541.86

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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.