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Finding the Fourth Proportional to 505,940.08, 698,169.84 and 279,571

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Solution

The fourth proportional to 505,940.08, 698,169.84 and 279,571 is: 385,792.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,940.08 : 698,169.84 = 279,571 : x
  2. Step 2: Convert to fraction form
    505,940.08/698,169.84 = 279,571/x
  3. Step 3: Cross multiply
    505,940.08x = 698,169.84 × 279,571
  4. Step 4: Simplify right side
    505,940.08x = 195,188,040,338.64
  5. Step 5: Solve for x
    x = 195,188,040,338.64/505,940.08
  6. Step 6: Final answer
    x = 385,792.80

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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.