Home / 639,517.82-882,511.46-353,031.76

Finding the Fourth Proportional to 639,517.82, 882,511.46 and 353,031.76

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Solution

The fourth proportional to 639,517.82, 882,511.46 and 353,031.76 is: 487,171.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,517.82 : 882,511.46 = 353,031.76 : x
  2. Step 2: Convert to fraction form
    639,517.82/882,511.46 = 353,031.76/x
  3. Step 3: Cross multiply
    639,517.82x = 882,511.46 × 353,031.76
  4. Step 4: Simplify right side
    639,517.82x = 311,554,573,943.97
  5. Step 5: Solve for x
    x = 311,554,573,943.97/639,517.82
  6. Step 6: Final answer
    x = 487,171.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.