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Finding the Fourth Proportional to 630,960.87, 870,721.52 and 344,480.97

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Solution

The fourth proportional to 630,960.87, 870,721.52 and 344,480.97 is: 475,381.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,960.87 : 870,721.52 = 344,480.97 : x
  2. Step 2: Convert to fraction form
    630,960.87/870,721.52 = 344,480.97/x
  3. Step 3: Cross multiply
    630,960.87x = 870,721.52 × 344,480.97
  4. Step 4: Simplify right side
    630,960.87x = 299,946,992,087.07
  5. Step 5: Solve for x
    x = 299,946,992,087.07/630,960.87
  6. Step 6: Final answer
    x = 475,381.29

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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.