Home / 815,998.80-1,221,233.40-815,998.80

Finding the Fourth Proportional to 815,998.80, 1,221,233.40 and 815,998.80

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Solution

The fourth proportional to 815,998.80, 1,221,233.40 and 815,998.80 is: 1,221,233.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,998.80 : 1,221,233.40 = 815,998.80 : x
  2. Step 2: Convert to fraction form
    815,998.80/1,221,233.40 = 815,998.80/x
  3. Step 3: Cross multiply
    815,998.80x = 1,221,233.40 × 815,998.80
  4. Step 4: Simplify right side
    815,998.80x = 996,524,988,919.92
  5. Step 5: Solve for x
    x = 996,524,988,919.92/815,998.80
  6. Step 6: Final answer
    x = 1,221,233.40

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1.5x scale

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.