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Finding the Fourth Proportional to 681,604.38, 1,022,409 and 208,287.77

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Solution

The fourth proportional to 681,604.38, 1,022,409 and 208,287.77 is: 312,432.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,604.38 : 1,022,409 = 208,287.77 : x
  2. Step 2: Convert to fraction form
    681,604.38/1,022,409 = 208,287.77/x
  3. Step 3: Cross multiply
    681,604.38x = 1,022,409 × 208,287.77
  4. Step 4: Simplify right side
    681,604.38x = 212,955,285,525.89
  5. Step 5: Solve for x
    x = 212,955,285,525.89/681,604.38
  6. Step 6: Final answer
    x = 312,432.39

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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.