Home / 486,977.30-729,969.15-329,221.70

Finding the Fourth Proportional to 486,977.30, 729,969.15 and 329,221.70

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Solution

The fourth proportional to 486,977.30, 729,969.15 and 329,221.70 is: 493,496.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,977.30 : 729,969.15 = 329,221.70 : x
  2. Step 2: Convert to fraction form
    486,977.30/729,969.15 = 329,221.70/x
  3. Step 3: Cross multiply
    486,977.30x = 729,969.15 × 329,221.70
  4. Step 4: Simplify right side
    486,977.30x = 240,321,684,510.56
  5. Step 5: Solve for x
    x = 240,321,684,510.56/486,977.30
  6. Step 6: Final answer
    x = 493,496.69

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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.