Home / 1,259,867.80-1,889,801.70-728,426.80

Finding the Fourth Proportional to 1,259,867.80, 1,889,801.70 and 728,426.80

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Solution

The fourth proportional to 1,259,867.80, 1,889,801.70 and 728,426.80 is: 1,092,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,867.80 : 1,889,801.70 = 728,426.80 : x
  2. Step 2: Convert to fraction form
    1,259,867.80/1,889,801.70 = 728,426.80/x
  3. Step 3: Cross multiply
    1,259,867.80x = 1,889,801.70 × 728,426.80
  4. Step 4: Simplify right side
    1,259,867.80x = 1,376,582,204,965.56
  5. Step 5: Solve for x
    x = 1,376,582,204,965.56/1,259,867.80
  6. Step 6: Final answer
    x = 1,092,640.20

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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.