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Finding the Fourth Proportional to 491,613.04, 678,490.66 and 276,794.97

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Solution

The fourth proportional to 491,613.04, 678,490.66 and 276,794.97 is: 382,013.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,613.04 : 678,490.66 = 276,794.97 : x
  2. Step 2: Convert to fraction form
    491,613.04/678,490.66 = 276,794.97/x
  3. Step 3: Cross multiply
    491,613.04x = 678,490.66 × 276,794.97
  4. Step 4: Simplify right side
    491,613.04x = 187,802,801,879.98
  5. Step 5: Solve for x
    x = 187,802,801,879.98/491,613.04
  6. Step 6: Final answer
    x = 382,013.47

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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.