Home / 429,617.03-644,456.69-130,120.97

Finding the Fourth Proportional to 429,617.03, 644,456.69 and 130,120.97

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Solution

The fourth proportional to 429,617.03, 644,456.69 and 130,120.97 is: 195,190.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,617.03 : 644,456.69 = 130,120.97 : x
  2. Step 2: Convert to fraction form
    429,617.03/644,456.69 = 130,120.97/x
  3. Step 3: Cross multiply
    429,617.03x = 644,456.69 × 130,120.97
  4. Step 4: Simplify right side
    429,617.03x = 83,857,325,752.90
  5. Step 5: Solve for x
    x = 83,857,325,752.90/429,617.03
  6. Step 6: Final answer
    x = 195,190.88

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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.