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Finding the Fourth Proportional to 494,726.84, 682,738.29 and 279,862.60

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Solution

The fourth proportional to 494,726.84, 682,738.29 and 279,862.60 is: 386,219.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,726.84 : 682,738.29 = 279,862.60 : x
  2. Step 2: Convert to fraction form
    494,726.84/682,738.29 = 279,862.60/x
  3. Step 3: Cross multiply
    494,726.84x = 682,738.29 × 279,862.60
  4. Step 4: Simplify right side
    494,726.84x = 191,072,912,958.95
  5. Step 5: Solve for x
    x = 191,072,912,958.95/494,726.84
  6. Step 6: Final answer
    x = 386,219.02

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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.