Home / 721,542.78-1,082,326.59-215,986.14

Finding the Fourth Proportional to 721,542.78, 1,082,326.59 and 215,986.14

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Solution

The fourth proportional to 721,542.78, 1,082,326.59 and 215,986.14 is: 323,982.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,542.78 : 1,082,326.59 = 215,986.14 : x
  2. Step 2: Convert to fraction form
    721,542.78/1,082,326.59 = 215,986.14/x
  3. Step 3: Cross multiply
    721,542.78x = 1,082,326.59 × 215,986.14
  4. Step 4: Simplify right side
    721,542.78x = 233,767,542,393.46
  5. Step 5: Solve for x
    x = 233,767,542,393.46/721,542.78
  6. Step 6: Final answer
    x = 323,982.93

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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.