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Finding the Fourth Proportional to 636,478.43, 878,338.98 and 364,634.33

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Solution

The fourth proportional to 636,478.43, 878,338.98 and 364,634.33 is: 503,194.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,478.43 : 878,338.98 = 364,634.33 : x
  2. Step 2: Convert to fraction form
    636,478.43/878,338.98 = 364,634.33/x
  3. Step 3: Cross multiply
    636,478.43x = 878,338.98 × 364,634.33
  4. Step 4: Simplify right side
    636,478.43x = 320,272,541,093.49
  5. Step 5: Solve for x
    x = 320,272,541,093.49/636,478.43
  6. Step 6: Final answer
    x = 503,194.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.