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Finding the Fourth Proportional to 639,912.44, 883,042.80 and 367,937.12

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Solution

The fourth proportional to 639,912.44, 883,042.80 and 367,937.12 is: 507,732.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,912.44 : 883,042.80 = 367,937.12 : x
  2. Step 2: Convert to fraction form
    639,912.44/883,042.80 = 367,937.12/x
  3. Step 3: Cross multiply
    639,912.44x = 883,042.80 × 367,937.12
  4. Step 4: Simplify right side
    639,912.44x = 324,904,220,253.52
  5. Step 5: Solve for x
    x = 324,904,220,253.52/639,912.44
  6. Step 6: Final answer
    x = 507,732.31

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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.