Home / 814,215.20-1,221,322.80-394,311.20

Finding the Fourth Proportional to 814,215.20, 1,221,322.80 and 394,311.20

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Solution

The fourth proportional to 814,215.20, 1,221,322.80 and 394,311.20 is: 591,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,215.20 : 1,221,322.80 = 394,311.20 : x
  2. Step 2: Convert to fraction form
    814,215.20/1,221,322.80 = 394,311.20/x
  3. Step 3: Cross multiply
    814,215.20x = 1,221,322.80 × 394,311.20
  4. Step 4: Simplify right side
    814,215.20x = 481,581,258,855.36
  5. Step 5: Solve for x
    x = 481,581,258,855.36/814,215.20
  6. Step 6: Final answer
    x = 591,466.80

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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.