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Finding the Fourth Proportional to 666,205.88, 999,689.72 and 281,924.47

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Solution

The fourth proportional to 666,205.88, 999,689.72 and 281,924.47 is: 423,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,205.88 : 999,689.72 = 281,924.47 : x
  2. Step 2: Convert to fraction form
    666,205.88/999,689.72 = 281,924.47/x
  3. Step 3: Cross multiply
    666,205.88x = 999,689.72 × 281,924.47
  4. Step 4: Simplify right side
    666,205.88x = 281,836,988,067.38
  5. Step 5: Solve for x
    x = 281,836,988,067.38/666,205.88
  6. Step 6: Final answer
    x = 423,047.88

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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.