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Finding the Fourth Proportional to 685,381.50, 945,695.25 and 443,630.52

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Solution

The fourth proportional to 685,381.50, 945,695.25 and 443,630.52 is: 612,125.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,381.50 : 945,695.25 = 443,630.52 : x
  2. Step 2: Convert to fraction form
    685,381.50/945,695.25 = 443,630.52/x
  3. Step 3: Cross multiply
    685,381.50x = 945,695.25 × 443,630.52
  4. Step 4: Simplify right side
    685,381.50x = 419,539,275,519.03
  5. Step 5: Solve for x
    x = 419,539,275,519.03/685,381.50
  6. Step 6: Final answer
    x = 612,125.18

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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.