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Finding the Fourth Proportional to 625,474.31, 863,155.91 and 338,994.32

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Solution

The fourth proportional to 625,474.31, 863,155.91 and 338,994.32 is: 467,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,474.31 : 863,155.91 = 338,994.32 : x
  2. Step 2: Convert to fraction form
    625,474.31/863,155.91 = 338,994.32/x
  3. Step 3: Cross multiply
    625,474.31x = 863,155.91 × 338,994.32
  4. Step 4: Simplify right side
    625,474.31x = 292,604,947,296.14
  5. Step 5: Solve for x
    x = 292,604,947,296.14/625,474.31
  6. Step 6: Final answer
    x = 467,812.90

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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.