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Finding the Fourth Proportional to 639,898.43, 883,043.96 and 367,959.85

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Solution

The fourth proportional to 639,898.43, 883,043.96 and 367,959.85 is: 507,775.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,898.43 : 883,043.96 = 367,959.85 : x
  2. Step 2: Convert to fraction form
    639,898.43/883,043.96 = 367,959.85/x
  3. Step 3: Cross multiply
    639,898.43x = 883,043.96 × 367,959.85
  4. Step 4: Simplify right side
    639,898.43x = 324,924,720,777.05
  5. Step 5: Solve for x
    x = 324,924,720,777.05/639,898.43
  6. Step 6: Final answer
    x = 507,775.46

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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.