Home / 486,974.39-672,091.41-280,238.54

Finding the Fourth Proportional to 486,974.39, 672,091.41 and 280,238.54

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Solution

The fourth proportional to 486,974.39, 672,091.41 and 280,238.54 is: 386,767.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,974.39 : 672,091.41 = 280,238.54 : x
  2. Step 2: Convert to fraction form
    486,974.39/672,091.41 = 280,238.54/x
  3. Step 3: Cross multiply
    486,974.39x = 672,091.41 × 280,238.54
  4. Step 4: Simplify right side
    486,974.39x = 188,345,912,124.48
  5. Step 5: Solve for x
    x = 188,345,912,124.48/486,974.39
  6. Step 6: Final answer
    x = 386,767.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.