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Finding the Fourth Proportional to 501,287.44, 691,780.08 and 274,934.56

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Solution

The fourth proportional to 501,287.44, 691,780.08 and 274,934.56 is: 379,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,287.44 : 691,780.08 = 274,934.56 : x
  2. Step 2: Convert to fraction form
    501,287.44/691,780.08 = 274,934.56/x
  3. Step 3: Cross multiply
    501,287.44x = 691,780.08 × 274,934.56
  4. Step 4: Simplify right side
    501,287.44x = 190,194,251,911.57
  5. Step 5: Solve for x
    x = 190,194,251,911.57/501,287.44
  6. Step 6: Final answer
    x = 379,411.56

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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.