Home / 652,979.16-979,680.42-320,321.88

Finding the Fourth Proportional to 652,979.16, 979,680.42 and 320,321.88

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Solution

The fourth proportional to 652,979.16, 979,680.42 and 320,321.88 is: 480,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,979.16 : 979,680.42 = 320,321.88 : x
  2. Step 2: Convert to fraction form
    652,979.16/979,680.42 = 320,321.88/x
  3. Step 3: Cross multiply
    652,979.16x = 979,680.42 × 320,321.88
  4. Step 4: Simplify right side
    652,979.16x = 313,813,073,933.59
  5. Step 5: Solve for x
    x = 313,813,073,933.59/652,979.16
  6. Step 6: Final answer
    x = 480,586.66

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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.