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Finding the Fourth Proportional to 625,863.06, 863,675.73 and 339,375.78

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Solution

The fourth proportional to 625,863.06, 863,675.73 and 339,375.78 is: 468,330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,863.06 : 863,675.73 = 339,375.78 : x
  2. Step 2: Convert to fraction form
    625,863.06/863,675.73 = 339,375.78/x
  3. Step 3: Cross multiply
    625,863.06x = 863,675.73 × 339,375.78
  4. Step 4: Simplify right side
    625,863.06x = 293,110,624,535.82
  5. Step 5: Solve for x
    x = 293,110,624,535.82/625,863.06
  6. Step 6: Final answer
    x = 468,330.28

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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.