Home / 492,939.82-680,288.45-278,001.46

Finding the Fourth Proportional to 492,939.82, 680,288.45 and 278,001.46

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Solution

The fourth proportional to 492,939.82, 680,288.45 and 278,001.46 is: 383,659.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,939.82 : 680,288.45 = 278,001.46 : x
  2. Step 2: Convert to fraction form
    492,939.82/680,288.45 = 278,001.46/x
  3. Step 3: Cross multiply
    492,939.82x = 680,288.45 × 278,001.46
  4. Step 4: Simplify right side
    492,939.82x = 189,121,182,321.14
  5. Step 5: Solve for x
    x = 189,121,182,321.14/492,939.82
  6. Step 6: Final answer
    x = 383,659.78

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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.