Home / 815,028.72-1,222,485.36-215,976.61

Finding the Fourth Proportional to 815,028.72, 1,222,485.36 and 215,976.61

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Solution

The fourth proportional to 815,028.72, 1,222,485.36 and 215,976.61 is: 323,949.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,028.72 : 1,222,485.36 = 215,976.61 : x
  2. Step 2: Convert to fraction form
    815,028.72/1,222,485.36 = 215,976.61/x
  3. Step 3: Cross multiply
    815,028.72x = 1,222,485.36 × 215,976.61
  4. Step 4: Simplify right side
    815,028.72x = 264,028,243,827.43
  5. Step 5: Solve for x
    x = 264,028,243,827.43/815,028.72
  6. Step 6: Final answer
    x = 323,949.62

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1.5x scale

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.