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Finding the Fourth Proportional to 809,568.80, 1,211,242.80 and 529,632.80

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Solution

The fourth proportional to 809,568.80, 1,211,242.80 and 529,632.80 is: 792,414.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,568.80 : 1,211,242.80 = 529,632.80 : x
  2. Step 2: Convert to fraction form
    809,568.80/1,211,242.80 = 529,632.80/x
  3. Step 3: Cross multiply
    809,568.80x = 1,211,242.80 × 529,632.80
  4. Step 4: Simplify right side
    809,568.80x = 641,513,915,643.84
  5. Step 5: Solve for x
    x = 641,513,915,643.84/809,568.80
  6. Step 6: Final answer
    x = 792,414.33

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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.