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Finding the Fourth Proportional to 625,806.72, 863,630.26 and 353,915.27

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Solution

The fourth proportional to 625,806.72, 863,630.26 and 353,915.27 is: 488,412.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,806.72 : 863,630.26 = 353,915.27 : x
  2. Step 2: Convert to fraction form
    625,806.72/863,630.26 = 353,915.27/x
  3. Step 3: Cross multiply
    625,806.72x = 863,630.26 × 353,915.27
  4. Step 4: Simplify right side
    625,806.72x = 305,651,936,648.07
  5. Step 5: Solve for x
    x = 305,651,936,648.07/625,806.72
  6. Step 6: Final answer
    x = 488,412.68

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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.