Home / 820,296.30-1,230,635.83-280,556.77

Finding the Fourth Proportional to 820,296.30, 1,230,635.83 and 280,556.77

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Solution

The fourth proportional to 820,296.30, 1,230,635.83 and 280,556.77 is: 420,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,296.30 : 1,230,635.83 = 280,556.77 : x
  2. Step 2: Convert to fraction form
    820,296.30/1,230,635.83 = 280,556.77/x
  3. Step 3: Cross multiply
    820,296.30x = 1,230,635.83 × 280,556.77
  4. Step 4: Simplify right side
    820,296.30x = 345,263,205,955.11
  5. Step 5: Solve for x
    x = 345,263,205,955.11/820,296.30
  6. Step 6: Final answer
    x = 420,900.60

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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.