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Finding the Fourth Proportional to 839,847.20, 1,259,770.80 and 341,568.80

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Solution

The fourth proportional to 839,847.20, 1,259,770.80 and 341,568.80 is: 512,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,847.20 : 1,259,770.80 = 341,568.80 : x
  2. Step 2: Convert to fraction form
    839,847.20/1,259,770.80 = 341,568.80/x
  3. Step 3: Cross multiply
    839,847.20x = 1,259,770.80 × 341,568.80
  4. Step 4: Simplify right side
    839,847.20x = 430,298,400,431.04
  5. Step 5: Solve for x
    x = 430,298,400,431.04/839,847.20
  6. Step 6: Final answer
    x = 512,353.20

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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.