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Finding the Fourth Proportional to 639,871.82, 883,015.72 and 349,481.96

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Solution

The fourth proportional to 639,871.82, 883,015.72 and 349,481.96 is: 482,281.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,871.82 : 883,015.72 = 349,481.96 : x
  2. Step 2: Convert to fraction form
    639,871.82/883,015.72 = 349,481.96/x
  3. Step 3: Cross multiply
    639,871.82x = 883,015.72 × 349,481.96
  4. Step 4: Simplify right side
    639,871.82x = 308,598,059,247.63
  5. Step 5: Solve for x
    x = 308,598,059,247.63/639,871.82
  6. Step 6: Final answer
    x = 482,281.06

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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.