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Finding the Fourth Proportional to 625,664, 863,411.18 and 339,176.72

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Solution

The fourth proportional to 625,664, 863,411.18 and 339,176.72 is: 468,061.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,664 : 863,411.18 = 339,176.72 : x
  2. Step 2: Convert to fraction form
    625,664/863,411.18 = 339,176.72/x
  3. Step 3: Cross multiply
    625,664x = 863,411.18 × 339,176.72
  4. Step 4: Simplify right side
    625,664x = 292,848,972,043.73
  5. Step 5: Solve for x
    x = 292,848,972,043.73/625,664
  6. Step 6: Final answer
    x = 468,061.09

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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.