Home / 859,003.40-1,288,505.10-810,014.60

Finding the Fourth Proportional to 859,003.40, 1,288,505.10 and 810,014.60

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Solution

The fourth proportional to 859,003.40, 1,288,505.10 and 810,014.60 is: 1,215,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,003.40 : 1,288,505.10 = 810,014.60 : x
  2. Step 2: Convert to fraction form
    859,003.40/1,288,505.10 = 810,014.60/x
  3. Step 3: Cross multiply
    859,003.40x = 1,288,505.10 × 810,014.60
  4. Step 4: Simplify right side
    859,003.40x = 1,043,707,943,174.46
  5. Step 5: Solve for x
    x = 1,043,707,943,174.46/859,003.40
  6. Step 6: Final answer
    x = 1,215,021.90

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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.