Home / 859,003.20-1,288,504.80-810,014.40

Finding the Fourth Proportional to 859,003.20, 1,288,504.80 and 810,014.40

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Solution

The fourth proportional to 859,003.20, 1,288,504.80 and 810,014.40 is: 1,215,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,003.20 : 1,288,504.80 = 810,014.40 : x
  2. Step 2: Convert to fraction form
    859,003.20/1,288,504.80 = 810,014.40/x
  3. Step 3: Cross multiply
    859,003.20x = 1,288,504.80 × 810,014.40
  4. Step 4: Simplify right side
    859,003.20x = 1,043,707,442,469.12
  5. Step 5: Solve for x
    x = 1,043,707,442,469.12/859,003.20
  6. Step 6: Final answer
    x = 1,215,021.60

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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.