Home / 1,330,643.70-1,995,965.55-1,120,691.70

Finding the Fourth Proportional to 1,330,643.70, 1,995,965.55 and 1,120,691.70

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Solution

The fourth proportional to 1,330,643.70, 1,995,965.55 and 1,120,691.70 is: 1,681,037.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,643.70 : 1,995,965.55 = 1,120,691.70 : x
  2. Step 2: Convert to fraction form
    1,330,643.70/1,995,965.55 = 1,120,691.70/x
  3. Step 3: Cross multiply
    1,330,643.70x = 1,995,965.55 × 1,120,691.70
  4. Step 4: Simplify right side
    1,330,643.70x = 2,236,862,025,370.94
  5. Step 5: Solve for x
    x = 2,236,862,025,370.94/1,330,643.70
  6. Step 6: Final answer
    x = 1,681,037.55

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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.