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Finding the Fourth Proportional to 666,744.71, 999,231.33 and 382,571.40

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Solution

The fourth proportional to 666,744.71, 999,231.33 and 382,571.40 is: 573,348.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,744.71 : 999,231.33 = 382,571.40 : x
  2. Step 2: Convert to fraction form
    666,744.71/999,231.33 = 382,571.40/x
  3. Step 3: Cross multiply
    666,744.71x = 999,231.33 × 382,571.40
  4. Step 4: Simplify right side
    666,744.71x = 382,277,328,841.96
  5. Step 5: Solve for x
    x = 382,277,328,841.96/666,744.71
  6. Step 6: Final answer
    x = 573,348.87

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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.