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Finding the Fourth Proportional to 603,816, 905,754.78 and 154,540.56

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Solution

The fourth proportional to 603,816, 905,754.78 and 154,540.56 is: 231,818.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,816 : 905,754.78 = 154,540.56 : x
  2. Step 2: Convert to fraction form
    603,816/905,754.78 = 154,540.56/x
  3. Step 3: Cross multiply
    603,816x = 905,754.78 × 154,540.56
  4. Step 4: Simplify right side
    603,816x = 139,975,850,923.88
  5. Step 5: Solve for x
    x = 139,975,850,923.88/603,816
  6. Step 6: Final answer
    x = 231,818.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.