Home / 685,351.79-1,027,694.64-343,648.42

Finding the Fourth Proportional to 685,351.79, 1,027,694.64 and 343,648.42

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Solution

The fourth proportional to 685,351.79, 1,027,694.64 and 343,648.42 is: 515,305.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,351.79 : 1,027,694.64 = 343,648.42 : x
  2. Step 2: Convert to fraction form
    685,351.79/1,027,694.64 = 343,648.42/x
  3. Step 3: Cross multiply
    685,351.79x = 1,027,694.64 × 343,648.42
  4. Step 4: Simplify right side
    685,351.79x = 353,165,637,560.23
  5. Step 5: Solve for x
    x = 353,165,637,560.23/685,351.79
  6. Step 6: Final answer
    x = 515,305.63

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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.