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Finding the Fourth Proportional to 442,399.73, 660,369.90 and 379,623.26

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Solution

The fourth proportional to 442,399.73, 660,369.90 and 379,623.26 is: 566,663.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,399.73 : 660,369.90 = 379,623.26 : x
  2. Step 2: Convert to fraction form
    442,399.73/660,369.90 = 379,623.26/x
  3. Step 3: Cross multiply
    442,399.73x = 660,369.90 × 379,623.26
  4. Step 4: Simplify right side
    442,399.73x = 250,691,770,942.03
  5. Step 5: Solve for x
    x = 250,691,770,942.03/442,399.73
  6. Step 6: Final answer
    x = 566,663.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.