Home / 1,259,896.20-1,891,812.60-728,455.20

Finding the Fourth Proportional to 1,259,896.20, 1,891,812.60 and 728,455.20

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Solution

The fourth proportional to 1,259,896.20, 1,891,812.60 and 728,455.20 is: 1,093,820.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,896.20 : 1,891,812.60 = 728,455.20 : x
  2. Step 2: Convert to fraction form
    1,259,896.20/1,891,812.60 = 728,455.20/x
  3. Step 3: Cross multiply
    1,259,896.20x = 1,891,812.60 × 728,455.20
  4. Step 4: Simplify right side
    1,259,896.20x = 1,378,100,725,895.52
  5. Step 5: Solve for x
    x = 1,378,100,725,895.52/1,259,896.20
  6. Step 6: Final answer
    x = 1,093,820.84

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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.