Home / 666,531.41-999,900.79-217,147.66

Finding the Fourth Proportional to 666,531.41, 999,900.79 and 217,147.66

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Solution

The fourth proportional to 666,531.41, 999,900.79 and 217,147.66 is: 325,755.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,531.41 : 999,900.79 = 217,147.66 : x
  2. Step 2: Convert to fraction form
    666,531.41/999,900.79 = 217,147.66/x
  3. Step 3: Cross multiply
    666,531.41x = 999,900.79 × 217,147.66
  4. Step 4: Simplify right side
    666,531.41x = 217,126,116,780.65
  5. Step 5: Solve for x
    x = 217,126,116,780.65/666,531.41
  6. Step 6: Final answer
    x = 325,755.27

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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.