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Finding the Fourth Proportional to 471,016.38, 649,668.39 and 289,489.98

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Solution

The fourth proportional to 471,016.38, 649,668.39 and 289,489.98 is: 399,290.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,016.38 : 649,668.39 = 289,489.98 : x
  2. Step 2: Convert to fraction form
    471,016.38/649,668.39 = 289,489.98/x
  3. Step 3: Cross multiply
    471,016.38x = 649,668.39 × 289,489.98
  4. Step 4: Simplify right side
    471,016.38x = 188,072,489,227.73
  5. Step 5: Solve for x
    x = 188,072,489,227.73/471,016.38
  6. Step 6: Final answer
    x = 399,290.76

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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.