Home / 1,281,236.80-1,921,855.20-810,011.20

Finding the Fourth Proportional to 1,281,236.80, 1,921,855.20 and 810,011.20

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Solution

The fourth proportional to 1,281,236.80, 1,921,855.20 and 810,011.20 is: 1,215,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,236.80 : 1,921,855.20 = 810,011.20 : x
  2. Step 2: Convert to fraction form
    1,281,236.80/1,921,855.20 = 810,011.20/x
  3. Step 3: Cross multiply
    1,281,236.80x = 1,921,855.20 × 810,011.20
  4. Step 4: Simplify right side
    1,281,236.80x = 1,556,724,236,778.24
  5. Step 5: Solve for x
    x = 1,556,724,236,778.24/1,281,236.80
  6. Step 6: Final answer
    x = 1,215,016.80

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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.