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Finding the Fourth Proportional to 494,064.74, 681,369.28 and 385,195.88

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Solution

The fourth proportional to 494,064.74, 681,369.28 and 385,195.88 is: 531,227.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,064.74 : 681,369.28 = 385,195.88 : x
  2. Step 2: Convert to fraction form
    494,064.74/681,369.28 = 385,195.88/x
  3. Step 3: Cross multiply
    494,064.74x = 681,369.28 × 385,195.88
  4. Step 4: Simplify right side
    494,064.74x = 262,460,635,044.73
  5. Step 5: Solve for x
    x = 262,460,635,044.73/494,064.74
  6. Step 6: Final answer
    x = 531,227.22

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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.