Home / 816,220.38-1,223,083.17-342,645.78

Finding the Fourth Proportional to 816,220.38, 1,223,083.17 and 342,645.78

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Solution

The fourth proportional to 816,220.38, 1,223,083.17 and 342,645.78 is: 513,445.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,220.38 : 1,223,083.17 = 342,645.78 : x
  2. Step 2: Convert to fraction form
    816,220.38/1,223,083.17 = 342,645.78/x
  3. Step 3: Cross multiply
    816,220.38x = 1,223,083.17 × 342,645.78
  4. Step 4: Simplify right side
    816,220.38x = 419,084,286,789.52
  5. Step 5: Solve for x
    x = 419,084,286,789.52/816,220.38
  6. Step 6: Final answer
    x = 513,445.02

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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.