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Finding the Fourth Proportional to 500,798.90, 691,098.99 and 274,439.54

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Solution

The fourth proportional to 500,798.90, 691,098.99 and 274,439.54 is: 378,724.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,798.90 : 691,098.99 = 274,439.54 : x
  2. Step 2: Convert to fraction form
    500,798.90/691,098.99 = 274,439.54/x
  3. Step 3: Cross multiply
    500,798.90x = 691,098.99 × 274,439.54
  4. Step 4: Simplify right side
    500,798.90x = 189,664,889,608.66
  5. Step 5: Solve for x
    x = 189,664,889,608.66/500,798.90
  6. Step 6: Final answer
    x = 378,724.65

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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.