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Finding the Fourth Proportional to 533,998.20, 800,997.30 and 280,932.60

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Solution

The fourth proportional to 533,998.20, 800,997.30 and 280,932.60 is: 421,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,998.20 : 800,997.30 = 280,932.60 : x
  2. Step 2: Convert to fraction form
    533,998.20/800,997.30 = 280,932.60/x
  3. Step 3: Cross multiply
    533,998.20x = 800,997.30 × 280,932.60
  4. Step 4: Simplify right side
    533,998.20x = 225,026,254,081.98
  5. Step 5: Solve for x
    x = 225,026,254,081.98/533,998.20
  6. Step 6: Final answer
    x = 421,398.90

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1.5x scale

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.