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Finding the Fourth Proportional to 666,206.38, 999,690.47 and 281,924.97

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Solution

The fourth proportional to 666,206.38, 999,690.47 and 281,924.97 is: 423,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,206.38 : 999,690.47 = 281,924.97 : x
  2. Step 2: Convert to fraction form
    666,206.38/999,690.47 = 281,924.97/x
  3. Step 3: Cross multiply
    666,206.38x = 999,690.47 × 281,924.97
  4. Step 4: Simplify right side
    666,206.38x = 281,837,705,764.04
  5. Step 5: Solve for x
    x = 281,837,705,764.04/666,206.38
  6. Step 6: Final answer
    x = 423,048.64

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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.