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Finding the Fourth Proportional to 494,616.70, 682,571.10 and 279,752.20

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Solution

The fourth proportional to 494,616.70, 682,571.10 and 279,752.20 is: 386,058.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,616.70 : 682,571.10 = 279,752.20 : x
  2. Step 2: Convert to fraction form
    494,616.70/682,571.10 = 279,752.20/x
  3. Step 3: Cross multiply
    494,616.70x = 682,571.10 × 279,752.20
  4. Step 4: Simplify right side
    494,616.70x = 190,950,766,881.42
  5. Step 5: Solve for x
    x = 190,950,766,881.42/494,616.70
  6. Step 6: Final answer
    x = 386,058.07

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1.5x scale

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.