Home / 1,284,986.40-1,926,393.12-810,628.80

Finding the Fourth Proportional to 1,284,986.40, 1,926,393.12 and 810,628.80

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Solution

The fourth proportional to 1,284,986.40, 1,926,393.12 and 810,628.80 is: 1,215,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,986.40 : 1,926,393.12 = 810,628.80 : x
  2. Step 2: Convert to fraction form
    1,284,986.40/1,926,393.12 = 810,628.80/x
  3. Step 3: Cross multiply
    1,284,986.40x = 1,926,393.12 × 810,628.80
  4. Step 4: Simplify right side
    1,284,986.40x = 1,561,589,743,193.86
  5. Step 5: Solve for x
    x = 1,561,589,743,193.86/1,284,986.40
  6. Step 6: Final answer
    x = 1,215,257.80

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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.