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Finding the Fourth Proportional to 639,357.88, 882,309.62 and 352,877.96

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Solution

The fourth proportional to 639,357.88, 882,309.62 and 352,877.96 is: 486,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,357.88 : 882,309.62 = 352,877.96 : x
  2. Step 2: Convert to fraction form
    639,357.88/882,309.62 = 352,877.96/x
  3. Step 3: Cross multiply
    639,357.88x = 882,309.62 × 352,877.96
  4. Step 4: Simplify right side
    639,357.88x = 311,347,618,793.98
  5. Step 5: Solve for x
    x = 311,347,618,793.98/639,357.88
  6. Step 6: Final answer
    x = 486,969.24

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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.