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Finding the Fourth Proportional to 880,297.70, 1,320,446.55 and 820,811.30

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Solution

The fourth proportional to 880,297.70, 1,320,446.55 and 820,811.30 is: 1,231,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,297.70 : 1,320,446.55 = 820,811.30 : x
  2. Step 2: Convert to fraction form
    880,297.70/1,320,446.55 = 820,811.30/x
  3. Step 3: Cross multiply
    880,297.70x = 1,320,446.55 × 820,811.30
  4. Step 4: Simplify right side
    880,297.70x = 1,083,837,449,286.02
  5. Step 5: Solve for x
    x = 1,083,837,449,286.02/880,297.70
  6. Step 6: Final answer
    x = 1,231,216.95

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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.