Home / 800,490.12-1,200,735.18-379,536.36

Finding the Fourth Proportional to 800,490.12, 1,200,735.18 and 379,536.36

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Solution

The fourth proportional to 800,490.12, 1,200,735.18 and 379,536.36 is: 569,304.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,490.12 : 1,200,735.18 = 379,536.36 : x
  2. Step 2: Convert to fraction form
    800,490.12/1,200,735.18 = 379,536.36/x
  3. Step 3: Cross multiply
    800,490.12x = 1,200,735.18 × 379,536.36
  4. Step 4: Simplify right side
    800,490.12x = 455,722,659,541.15
  5. Step 5: Solve for x
    x = 455,722,659,541.15/800,490.12
  6. Step 6: Final answer
    x = 569,304.54

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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.