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Finding the Fourth Proportional to 809,715.90, 1,214,573.85 and 797,906.10

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Solution

The fourth proportional to 809,715.90, 1,214,573.85 and 797,906.10 is: 1,196,859.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,715.90 : 1,214,573.85 = 797,906.10 : x
  2. Step 2: Convert to fraction form
    809,715.90/1,214,573.85 = 797,906.10/x
  3. Step 3: Cross multiply
    809,715.90x = 1,214,573.85 × 797,906.10
  4. Step 4: Simplify right side
    809,715.90x = 969,115,883,815.49
  5. Step 5: Solve for x
    x = 969,115,883,815.49/809,715.90
  6. Step 6: Final answer
    x = 1,196,859.15

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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.