Home / 1,259,863.80-1,889,795.70-728,422.80

Finding the Fourth Proportional to 1,259,863.80, 1,889,795.70 and 728,422.80

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Solution

The fourth proportional to 1,259,863.80, 1,889,795.70 and 728,422.80 is: 1,092,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,863.80 : 1,889,795.70 = 728,422.80 : x
  2. Step 2: Convert to fraction form
    1,259,863.80/1,889,795.70 = 728,422.80/x
  3. Step 3: Cross multiply
    1,259,863.80x = 1,889,795.70 × 728,422.80
  4. Step 4: Simplify right side
    1,259,863.80x = 1,376,570,275,221.96
  5. Step 5: Solve for x
    x = 1,376,570,275,221.96/1,259,863.80
  6. Step 6: Final answer
    x = 1,092,634.20

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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.