Home / 815,921.35-1,223,121.11-275,801.83

Finding the Fourth Proportional to 815,921.35, 1,223,121.11 and 275,801.83

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Solution

The fourth proportional to 815,921.35, 1,223,121.11 and 275,801.83 is: 413,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,921.35 : 1,223,121.11 = 275,801.83 : x
  2. Step 2: Convert to fraction form
    815,921.35/1,223,121.11 = 275,801.83/x
  3. Step 3: Cross multiply
    815,921.35x = 1,223,121.11 × 275,801.83
  4. Step 4: Simplify right side
    815,921.35x = 337,339,039,070.62
  5. Step 5: Solve for x
    x = 337,339,039,070.62/815,921.35
  6. Step 6: Final answer
    x = 413,445.54

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Double scale
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1.5x scale

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.