Home / 811,296.20-1,216,944.30-806,630.60

Finding the Fourth Proportional to 811,296.20, 1,216,944.30 and 806,630.60

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Solution

The fourth proportional to 811,296.20, 1,216,944.30 and 806,630.60 is: 1,209,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,296.20 : 1,216,944.30 = 806,630.60 : x
  2. Step 2: Convert to fraction form
    811,296.20/1,216,944.30 = 806,630.60/x
  3. Step 3: Cross multiply
    811,296.20x = 1,216,944.30 × 806,630.60
  4. Step 4: Simplify right side
    811,296.20x = 981,624,510,875.58
  5. Step 5: Solve for x
    x = 981,624,510,875.58/811,296.20
  6. Step 6: Final answer
    x = 1,209,945.90

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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.