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Finding the Fourth Proportional to 496,718.70, 685,452.76 and 281,845.94

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Solution

The fourth proportional to 496,718.70, 685,452.76 and 281,845.94 is: 388,936.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,718.70 : 685,452.76 = 281,845.94 : x
  2. Step 2: Convert to fraction form
    496,718.70/685,452.76 = 281,845.94/x
  3. Step 3: Cross multiply
    496,718.70x = 685,452.76 × 281,845.94
  4. Step 4: Simplify right side
    496,718.70x = 193,192,077,467.79
  5. Step 5: Solve for x
    x = 193,192,077,467.79/496,718.70
  6. Step 6: Final answer
    x = 388,936.59

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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.