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Finding the Fourth Proportional to 455,703.28, 682,960.36 and 329,767.72

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Solution

The fourth proportional to 455,703.28, 682,960.36 and 329,767.72 is: 494,221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,703.28 : 682,960.36 = 329,767.72 : x
  2. Step 2: Convert to fraction form
    455,703.28/682,960.36 = 329,767.72/x
  3. Step 3: Cross multiply
    455,703.28x = 682,960.36 × 329,767.72
  4. Step 4: Simplify right side
    455,703.28x = 225,218,280,767.58
  5. Step 5: Solve for x
    x = 225,218,280,767.58/455,703.28
  6. Step 6: Final answer
    x = 494,221.33

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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.