Home / 809,901.21-1,216,100.34-685,180.29

Finding the Fourth Proportional to 809,901.21, 1,216,100.34 and 685,180.29

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Solution

The fourth proportional to 809,901.21, 1,216,100.34 and 685,180.29 is: 1,028,826.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,901.21 : 1,216,100.34 = 685,180.29 : x
  2. Step 2: Convert to fraction form
    809,901.21/1,216,100.34 = 685,180.29/x
  3. Step 3: Cross multiply
    809,901.21x = 1,216,100.34 × 685,180.29
  4. Step 4: Simplify right side
    809,901.21x = 833,247,983,630.30
  5. Step 5: Solve for x
    x = 833,247,983,630.30/809,901.21
  6. Step 6: Final answer
    x = 1,028,826.69

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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.