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Finding the Fourth Proportional to 639,591.32, 882,621.70 and 349,193

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Solution

The fourth proportional to 639,591.32, 882,621.70 and 349,193 is: 481,878.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,591.32 : 882,621.70 = 349,193 : x
  2. Step 2: Convert to fraction form
    639,591.32/882,621.70 = 349,193/x
  3. Step 3: Cross multiply
    639,591.32x = 882,621.70 × 349,193
  4. Step 4: Simplify right side
    639,591.32x = 308,205,319,288.10
  5. Step 5: Solve for x
    x = 308,205,319,288.10/639,591.32
  6. Step 6: Final answer
    x = 481,878.52

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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.