Home / 695,665.20-1,043,647.68-215,883.60

Finding the Fourth Proportional to 695,665.20, 1,043,647.68 and 215,883.60

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Solution

The fourth proportional to 695,665.20, 1,043,647.68 and 215,883.60 is: 323,871.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,665.20 : 1,043,647.68 = 215,883.60 : x
  2. Step 2: Convert to fraction form
    695,665.20/1,043,647.68 = 215,883.60/x
  3. Step 3: Cross multiply
    695,665.20x = 1,043,647.68 × 215,883.60
  4. Step 4: Simplify right side
    695,665.20x = 225,306,418,290.05
  5. Step 5: Solve for x
    x = 225,306,418,290.05/695,665.20
  6. Step 6: Final answer
    x = 323,871.91

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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.