Home / 827,209.20-1,240,813.80-661,321.20

Finding the Fourth Proportional to 827,209.20, 1,240,813.80 and 661,321.20

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Solution

The fourth proportional to 827,209.20, 1,240,813.80 and 661,321.20 is: 991,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,209.20 : 1,240,813.80 = 661,321.20 : x
  2. Step 2: Convert to fraction form
    827,209.20/1,240,813.80 = 661,321.20/x
  3. Step 3: Cross multiply
    827,209.20x = 1,240,813.80 × 661,321.20
  4. Step 4: Simplify right side
    827,209.20x = 820,576,471,192.56
  5. Step 5: Solve for x
    x = 820,576,471,192.56/827,209.20
  6. Step 6: Final answer
    x = 991,981.80

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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.