Home / 666,531.78-999,901.35-217,148.03

Finding the Fourth Proportional to 666,531.78, 999,901.35 and 217,148.03

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Solution

The fourth proportional to 666,531.78, 999,901.35 and 217,148.03 is: 325,755.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,531.78 : 999,901.35 = 217,148.03 : x
  2. Step 2: Convert to fraction form
    666,531.78/999,901.35 = 217,148.03/x
  3. Step 3: Cross multiply
    666,531.78x = 999,901.35 × 217,148.03
  4. Step 4: Simplify right side
    666,531.78x = 217,126,610,846.59
  5. Step 5: Solve for x
    x = 217,126,610,846.59/666,531.78
  6. Step 6: Final answer
    x = 325,755.83

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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.