Home / 853,116.36-1,278,690.32-320,297.56

Finding the Fourth Proportional to 853,116.36, 1,278,690.32 and 320,297.56

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Solution

The fourth proportional to 853,116.36, 1,278,690.32 and 320,297.56 is: 480,076.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,116.36 : 1,278,690.32 = 320,297.56 : x
  2. Step 2: Convert to fraction form
    853,116.36/1,278,690.32 = 320,297.56/x
  3. Step 3: Cross multiply
    853,116.36x = 1,278,690.32 × 320,297.56
  4. Step 4: Simplify right side
    853,116.36x = 409,561,389,491.62
  5. Step 5: Solve for x
    x = 409,561,389,491.62/853,116.36
  6. Step 6: Final answer
    x = 480,076.82

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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.