Home / 639,343.28-882,291.92-352,861.31

Finding the Fourth Proportional to 639,343.28, 882,291.92 and 352,861.31

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Solution

The fourth proportional to 639,343.28, 882,291.92 and 352,861.31 is: 486,947.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,343.28 : 882,291.92 = 352,861.31 : x
  2. Step 2: Convert to fraction form
    639,343.28/882,291.92 = 352,861.31/x
  3. Step 3: Cross multiply
    639,343.28x = 882,291.92 × 352,861.31
  4. Step 4: Simplify right side
    639,343.28x = 311,326,684,127.46
  5. Step 5: Solve for x
    x = 311,326,684,127.46/639,343.28
  6. Step 6: Final answer
    x = 486,947.62

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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.