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Finding the Fourth Proportional to 625,317.22, 862,940.78 and 338,837.84

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Solution

The fourth proportional to 625,317.22, 862,940.78 and 338,837.84 is: 467,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,317.22 : 862,940.78 = 338,837.84 : x
  2. Step 2: Convert to fraction form
    625,317.22/862,940.78 = 338,837.84/x
  3. Step 3: Cross multiply
    625,317.22x = 862,940.78 × 338,837.84
  4. Step 4: Simplify right side
    625,317.22x = 292,396,989,943.12
  5. Step 5: Solve for x
    x = 292,396,989,943.12/625,317.22
  6. Step 6: Final answer
    x = 467,597.85

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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.