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Finding the Fourth Proportional to 533,365.20, 800,485.20 and 515,869.20

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Solution

The fourth proportional to 533,365.20, 800,485.20 and 515,869.20 is: 774,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,365.20 : 800,485.20 = 515,869.20 : x
  2. Step 2: Convert to fraction form
    533,365.20/800,485.20 = 515,869.20/x
  3. Step 3: Cross multiply
    533,365.20x = 800,485.20 × 515,869.20
  4. Step 4: Simplify right side
    533,365.20x = 412,945,659,735.84
  5. Step 5: Solve for x
    x = 412,945,659,735.84/533,365.20
  6. Step 6: Final answer
    x = 774,226.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.