Home / 1,259,892.20-1,891,806.60-728,451.20

Finding the Fourth Proportional to 1,259,892.20, 1,891,806.60 and 728,451.20

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Solution

The fourth proportional to 1,259,892.20, 1,891,806.60 and 728,451.20 is: 1,093,814.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,892.20 : 1,891,806.60 = 728,451.20 : x
  2. Step 2: Convert to fraction form
    1,259,892.20/1,891,806.60 = 728,451.20/x
  3. Step 3: Cross multiply
    1,259,892.20x = 1,891,806.60 × 728,451.20
  4. Step 4: Simplify right side
    1,259,892.20x = 1,378,088,787,937.92
  5. Step 5: Solve for x
    x = 1,378,088,787,937.92/1,259,892.20
  6. Step 6: Final answer
    x = 1,093,814.84

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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.