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Finding the Fourth Proportional to 624,336.63, 861,601.74 and 379,238.52

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Solution

The fourth proportional to 624,336.63, 861,601.74 and 379,238.52 is: 523,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,336.63 : 861,601.74 = 379,238.52 : x
  2. Step 2: Convert to fraction form
    624,336.63/861,601.74 = 379,238.52/x
  3. Step 3: Cross multiply
    624,336.63x = 861,601.74 × 379,238.52
  4. Step 4: Simplify right side
    624,336.63x = 326,752,568,707.03
  5. Step 5: Solve for x
    x = 326,752,568,707.03/624,336.63
  6. Step 6: Final answer
    x = 523,359.60

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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.