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Finding the Fourth Proportional to 625,891.73, 863,730.81 and 339,411.74

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Solution

The fourth proportional to 625,891.73, 863,730.81 and 339,411.74 is: 468,388.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,891.73 : 863,730.81 = 339,411.74 : x
  2. Step 2: Convert to fraction form
    625,891.73/863,730.81 = 339,411.74/x
  3. Step 3: Cross multiply
    625,891.73x = 863,730.81 × 339,411.74
  4. Step 4: Simplify right side
    625,891.73x = 293,160,372,795.06
  5. Step 5: Solve for x
    x = 293,160,372,795.06/625,891.73
  6. Step 6: Final answer
    x = 468,388.32

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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.