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Finding the Fourth Proportional to 625,722.48, 863,491.82 and 353,843.76

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Solution

The fourth proportional to 625,722.48, 863,491.82 and 353,843.76 is: 488,301.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,722.48 : 863,491.82 = 353,843.76 : x
  2. Step 2: Convert to fraction form
    625,722.48/863,491.82 = 353,843.76/x
  3. Step 3: Cross multiply
    625,722.48x = 863,491.82 × 353,843.76
  4. Step 4: Simplify right side
    625,722.48x = 305,541,190,548.82
  5. Step 5: Solve for x
    x = 305,541,190,548.82/625,722.48
  6. Step 6: Final answer
    x = 488,301.44

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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.