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Finding the Fourth Proportional to 505,810.22, 698,009.90 and 276,362.60

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Solution

The fourth proportional to 505,810.22, 698,009.90 and 276,362.60 is: 381,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,810.22 : 698,009.90 = 276,362.60 : x
  2. Step 2: Convert to fraction form
    505,810.22/698,009.90 = 276,362.60/x
  3. Step 3: Cross multiply
    505,810.22x = 698,009.90 × 276,362.60
  4. Step 4: Simplify right side
    505,810.22x = 192,903,825,917.88
  5. Step 5: Solve for x
    x = 192,903,825,917.88/505,810.22
  6. Step 6: Final answer
    x = 381,375.90

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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.