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Finding the Fourth Proportional to 567,287.62, 782,856.92 and 312,638.81

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Solution

The fourth proportional to 567,287.62, 782,856.92 and 312,638.81 is: 431,441.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,287.62 : 782,856.92 = 312,638.81 : x
  2. Step 2: Convert to fraction form
    567,287.62/782,856.92 = 312,638.81/x
  3. Step 3: Cross multiply
    567,287.62x = 782,856.92 × 312,638.81
  4. Step 4: Simplify right side
    567,287.62x = 244,751,452,736.38
  5. Step 5: Solve for x
    x = 244,751,452,736.38/567,287.62
  6. Step 6: Final answer
    x = 431,441.56

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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.