Home / 486,942.80-729,917.40-329,187.20

Finding the Fourth Proportional to 486,942.80, 729,917.40 and 329,187.20

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Solution

The fourth proportional to 486,942.80, 729,917.40 and 329,187.20 is: 493,444.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,942.80 : 729,917.40 = 329,187.20 : x
  2. Step 2: Convert to fraction form
    486,942.80/729,917.40 = 329,187.20/x
  3. Step 3: Cross multiply
    486,942.80x = 729,917.40 × 329,187.20
  4. Step 4: Simplify right side
    486,942.80x = 240,279,465,137.28
  5. Step 5: Solve for x
    x = 240,279,465,137.28/486,942.80
  6. Step 6: Final answer
    x = 493,444.95

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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.