Home / 681,700.20-1,022,540.70-307,722.60

Finding the Fourth Proportional to 681,700.20, 1,022,540.70 and 307,722.60

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Solution

The fourth proportional to 681,700.20, 1,022,540.70 and 307,722.60 is: 461,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,700.20 : 1,022,540.70 = 307,722.60 : x
  2. Step 2: Convert to fraction form
    681,700.20/1,022,540.70 = 307,722.60/x
  3. Step 3: Cross multiply
    681,700.20x = 1,022,540.70 × 307,722.60
  4. Step 4: Simplify right side
    681,700.20x = 314,658,882,809.82
  5. Step 5: Solve for x
    x = 314,658,882,809.82/681,700.20
  6. Step 6: Final answer
    x = 461,579.57

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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.