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Finding the Fourth Proportional to 505,980.09, 698,232.83 and 279,620.73

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Solution

The fourth proportional to 505,980.09, 698,232.83 and 279,620.73 is: 385,865.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,980.09 : 698,232.83 = 279,620.73 : x
  2. Step 2: Convert to fraction form
    505,980.09/698,232.83 = 279,620.73/x
  3. Step 3: Cross multiply
    505,980.09x = 698,232.83 × 279,620.73
  4. Step 4: Simplify right side
    505,980.09x = 195,240,372,236.46
  5. Step 5: Solve for x
    x = 195,240,372,236.46/505,980.09
  6. Step 6: Final answer
    x = 385,865.72

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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.