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Finding the Fourth Proportional to 666,791.25, 1,000,274.76 and 217,354.65

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Solution

The fourth proportional to 666,791.25, 1,000,274.76 and 217,354.65 is: 326,060.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,791.25 : 1,000,274.76 = 217,354.65 : x
  2. Step 2: Convert to fraction form
    666,791.25/1,000,274.76 = 217,354.65/x
  3. Step 3: Cross multiply
    666,791.25x = 1,000,274.76 × 217,354.65
  4. Step 4: Simplify right side
    666,791.25x = 217,414,370,363.63
  5. Step 5: Solve for x
    x = 217,414,370,363.63/666,791.25
  6. Step 6: Final answer
    x = 326,060.62

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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.