Home / 810,005.70-1,215,008.55-798,195.90

Finding the Fourth Proportional to 810,005.70, 1,215,008.55 and 798,195.90

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Solution

The fourth proportional to 810,005.70, 1,215,008.55 and 798,195.90 is: 1,197,293.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,005.70 : 1,215,008.55 = 798,195.90 : x
  2. Step 2: Convert to fraction form
    810,005.70/1,215,008.55 = 798,195.90/x
  3. Step 3: Cross multiply
    810,005.70x = 1,215,008.55 × 798,195.90
  4. Step 4: Simplify right side
    810,005.70x = 969,814,843,074.95
  5. Step 5: Solve for x
    x = 969,814,843,074.95/810,005.70
  6. Step 6: Final answer
    x = 1,197,293.85

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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.