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Finding the Fourth Proportional to 627,422.91, 865,842.96 and 340,942.31

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Solution

The fourth proportional to 627,422.91, 865,842.96 and 340,942.31 is: 470,500.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,422.91 : 865,842.96 = 340,942.31 : x
  2. Step 2: Convert to fraction form
    627,422.91/865,842.96 = 340,942.31/x
  3. Step 3: Cross multiply
    627,422.91x = 865,842.96 × 340,942.31
  4. Step 4: Simplify right side
    627,422.91x = 295,202,497,174.93
  5. Step 5: Solve for x
    x = 295,202,497,174.93/627,422.91
  6. Step 6: Final answer
    x = 470,500.03

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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.