Home / 639,380.68-882,282.48-352,882.29

Finding the Fourth Proportional to 639,380.68, 882,282.48 and 352,882.29

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Solution

The fourth proportional to 639,380.68, 882,282.48 and 352,882.29 is: 486,942.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,380.68 : 882,282.48 = 352,882.29 : x
  2. Step 2: Convert to fraction form
    639,380.68/882,282.48 = 352,882.29/x
  3. Step 3: Cross multiply
    639,380.68x = 882,282.48 × 352,882.29
  4. Step 4: Simplify right side
    639,380.68x = 311,341,863,954.53
  5. Step 5: Solve for x
    x = 311,341,863,954.53/639,380.68
  6. Step 6: Final answer
    x = 486,942.87

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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.