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Finding the Fourth Proportional to 625,980.25, 863,853.81 and 339,500.56

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Solution

The fourth proportional to 625,980.25, 863,853.81 and 339,500.56 is: 468,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,980.25 : 863,853.81 = 339,500.56 : x
  2. Step 2: Convert to fraction form
    625,980.25/863,853.81 = 339,500.56/x
  3. Step 3: Cross multiply
    625,980.25x = 863,853.81 × 339,500.56
  4. Step 4: Simplify right side
    625,980.25x = 293,278,852,253.13
  5. Step 5: Solve for x
    x = 293,278,852,253.13/625,980.25
  6. Step 6: Final answer
    x = 468,511.35

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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.