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Finding the Fourth Proportional to 839,691.72, 1,259,782.92 and 271,059.48

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Solution

The fourth proportional to 839,691.72, 1,259,782.92 and 271,059.48 is: 406,668.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,691.72 : 1,259,782.92 = 271,059.48 : x
  2. Step 2: Convert to fraction form
    839,691.72/1,259,782.92 = 271,059.48/x
  3. Step 3: Cross multiply
    839,691.72x = 1,259,782.92 × 271,059.48
  4. Step 4: Simplify right side
    839,691.72x = 341,476,103,208.08
  5. Step 5: Solve for x
    x = 341,476,103,208.08/839,691.72
  6. Step 6: Final answer
    x = 406,668.42

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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.