Home / 721,326.82-1,082,238.90-322,243.06

Finding the Fourth Proportional to 721,326.82, 1,082,238.90 and 322,243.06

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Solution

The fourth proportional to 721,326.82, 1,082,238.90 and 322,243.06 is: 483,475.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,326.82 : 1,082,238.90 = 322,243.06 : x
  2. Step 2: Convert to fraction form
    721,326.82/1,082,238.90 = 322,243.06/x
  3. Step 3: Cross multiply
    721,326.82x = 1,082,238.90 × 322,243.06
  4. Step 4: Simplify right side
    721,326.82x = 348,743,974,787.03
  5. Step 5: Solve for x
    x = 348,743,974,787.03/721,326.82
  6. Step 6: Final answer
    x = 483,475.68

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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.