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Finding the Fourth Proportional to 503,181, 694,389.78 and 276,821.64

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Solution

The fourth proportional to 503,181, 694,389.78 and 276,821.64 is: 382,013.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,181 : 694,389.78 = 276,821.64 : x
  2. Step 2: Convert to fraction form
    503,181/694,389.78 = 276,821.64/x
  3. Step 3: Cross multiply
    503,181x = 694,389.78 × 276,821.64
  4. Step 4: Simplify right side
    503,181x = 192,222,117,698.84
  5. Step 5: Solve for x
    x = 192,222,117,698.84/503,181
  6. Step 6: Final answer
    x = 382,013.86

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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.