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Finding the Fourth Proportional to 627,438.26, 865,864.14 and 340,957.73

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Solution

The fourth proportional to 627,438.26, 865,864.14 and 340,957.73 is: 470,521.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,438.26 : 865,864.14 = 340,957.73 : x
  2. Step 2: Convert to fraction form
    627,438.26/865,864.14 = 340,957.73/x
  3. Step 3: Cross multiply
    627,438.26x = 865,864.14 × 340,957.73
  4. Step 4: Simplify right side
    627,438.26x = 295,223,071,662.80
  5. Step 5: Solve for x
    x = 295,223,071,662.80/627,438.26
  6. Step 6: Final answer
    x = 470,521.31

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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.