Home / 808,321.68-1,115,458.22-445,760.80

Finding the Fourth Proportional to 808,321.68, 1,115,458.22 and 445,760.80

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Solution

The fourth proportional to 808,321.68, 1,115,458.22 and 445,760.80 is: 615,135.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,321.68 : 1,115,458.22 = 445,760.80 : x
  2. Step 2: Convert to fraction form
    808,321.68/1,115,458.22 = 445,760.80/x
  3. Step 3: Cross multiply
    808,321.68x = 1,115,458.22 × 445,760.80
  4. Step 4: Simplify right side
    808,321.68x = 497,227,548,513.78
  5. Step 5: Solve for x
    x = 497,227,548,513.78/808,321.68
  6. Step 6: Final answer
    x = 615,135.73

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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.