Home / 814,987.80-1,222,481.70-513,837.90

Finding the Fourth Proportional to 814,987.80, 1,222,481.70 and 513,837.90

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Solution

The fourth proportional to 814,987.80, 1,222,481.70 and 513,837.90 is: 770,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,987.80 : 1,222,481.70 = 513,837.90 : x
  2. Step 2: Convert to fraction form
    814,987.80/1,222,481.70 = 513,837.90/x
  3. Step 3: Cross multiply
    814,987.80x = 1,222,481.70 × 513,837.90
  4. Step 4: Simplify right side
    814,987.80x = 628,157,429,516.43
  5. Step 5: Solve for x
    x = 628,157,429,516.43/814,987.80
  6. Step 6: Final answer
    x = 770,756.85

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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.