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Finding the Fourth Proportional to 500,799.21, 691,100.49 and 274,444.71

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Solution

The fourth proportional to 500,799.21, 691,100.49 and 274,444.71 is: 378,732.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,799.21 : 691,100.49 = 274,444.71 : x
  2. Step 2: Convert to fraction form
    500,799.21/691,100.49 = 274,444.71/x
  3. Step 3: Cross multiply
    500,799.21x = 691,100.49 × 274,444.71
  4. Step 4: Simplify right side
    500,799.21x = 189,668,873,558.91
  5. Step 5: Solve for x
    x = 189,668,873,558.91/500,799.21
  6. Step 6: Final answer
    x = 378,732.37

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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.