Home / 815,018.40-1,221,361.20-565,408.80

Finding the Fourth Proportional to 815,018.40, 1,221,361.20 and 565,408.80

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Solution

The fourth proportional to 815,018.40, 1,221,361.20 and 565,408.80 is: 847,304.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,018.40 : 1,221,361.20 = 565,408.80 : x
  2. Step 2: Convert to fraction form
    815,018.40/1,221,361.20 = 565,408.80/x
  3. Step 3: Cross multiply
    815,018.40x = 1,221,361.20 × 565,408.80
  4. Step 4: Simplify right side
    815,018.40x = 690,568,370,458.56
  5. Step 5: Solve for x
    x = 690,568,370,458.56/815,018.40
  6. Step 6: Final answer
    x = 847,304.02

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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.