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Finding the Fourth Proportional to 661,123.73, 991,103.99 and 262,044.63

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Solution

The fourth proportional to 661,123.73, 991,103.99 and 262,044.63 is: 392,836.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,123.73 : 991,103.99 = 262,044.63 : x
  2. Step 2: Convert to fraction form
    661,123.73/991,103.99 = 262,044.63/x
  3. Step 3: Cross multiply
    661,123.73x = 991,103.99 × 262,044.63
  4. Step 4: Simplify right side
    661,123.73x = 259,713,477,040.85
  5. Step 5: Solve for x
    x = 259,713,477,040.85/661,123.73
  6. Step 6: Final answer
    x = 392,836.42

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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.