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Finding the Fourth Proportional to 843,900.80, 1,265,714.76 and 311,672.48

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Solution

The fourth proportional to 843,900.80, 1,265,714.76 and 311,672.48 is: 467,458.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,900.80 : 1,265,714.76 = 311,672.48 : x
  2. Step 2: Convert to fraction form
    843,900.80/1,265,714.76 = 311,672.48/x
  3. Step 3: Cross multiply
    843,900.80x = 1,265,714.76 × 311,672.48
  4. Step 4: Simplify right side
    843,900.80x = 394,488,458,221.81
  5. Step 5: Solve for x
    x = 394,488,458,221.81/843,900.80
  6. Step 6: Final answer
    x = 467,458.33

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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.