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Finding the Fourth Proportional to 739,648, 1,109,286.40 and 207,031.04

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Solution

The fourth proportional to 739,648, 1,109,286.40 and 207,031.04 is: 310,494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,648 : 1,109,286.40 = 207,031.04 : x
  2. Step 2: Convert to fraction form
    739,648/1,109,286.40 = 207,031.04/x
  3. Step 3: Cross multiply
    739,648x = 1,109,286.40 × 207,031.04
  4. Step 4: Simplify right side
    739,648x = 229,656,717,049.86
  5. Step 5: Solve for x
    x = 229,656,717,049.86/739,648
  6. Step 6: Final answer
    x = 310,494.61

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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.