Home / 429,789.22-644,531.28-126,098.62

Finding the Fourth Proportional to 429,789.22, 644,531.28 and 126,098.62

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Solution

The fourth proportional to 429,789.22, 644,531.28 and 126,098.62 is: 189,103.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,789.22 : 644,531.28 = 126,098.62 : x
  2. Step 2: Convert to fraction form
    429,789.22/644,531.28 = 126,098.62/x
  3. Step 3: Cross multiply
    429,789.22x = 644,531.28 × 126,098.62
  4. Step 4: Simplify right side
    429,789.22x = 81,274,504,954.83
  5. Step 5: Solve for x
    x = 81,274,504,954.83/429,789.22
  6. Step 6: Final answer
    x = 189,103.17

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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.