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Finding the Fourth Proportional to 863,742.68, 1,191,961.80 and 481,769.16

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Solution

The fourth proportional to 863,742.68, 1,191,961.80 and 481,769.16 is: 664,839.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,742.68 : 1,191,961.80 = 481,769.16 : x
  2. Step 2: Convert to fraction form
    863,742.68/1,191,961.80 = 481,769.16/x
  3. Step 3: Cross multiply
    863,742.68x = 1,191,961.80 × 481,769.16
  4. Step 4: Simplify right side
    863,742.68x = 574,250,435,138.09
  5. Step 5: Solve for x
    x = 574,250,435,138.09/863,742.68
  6. Step 6: Final answer
    x = 664,839.71

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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.