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Finding the Fourth Proportional to 685,425.24, 945,855.72 and 379,479.96

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Solution

The fourth proportional to 685,425.24, 945,855.72 and 379,479.96 is: 523,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,425.24 : 945,855.72 = 379,479.96 : x
  2. Step 2: Convert to fraction form
    685,425.24/945,855.72 = 379,479.96/x
  3. Step 3: Cross multiply
    685,425.24x = 945,855.72 × 379,479.96
  4. Step 4: Simplify right side
    685,425.24x = 358,933,290,791.37
  5. Step 5: Solve for x
    x = 358,933,290,791.37/685,425.24
  6. Step 6: Final answer
    x = 523,665.12

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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.