Home / 721,311.29-1,082,065.40-300,488.75

Finding the Fourth Proportional to 721,311.29, 1,082,065.40 and 300,488.75

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Solution

The fourth proportional to 721,311.29, 1,082,065.40 and 300,488.75 is: 450,774.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,311.29 : 1,082,065.40 = 300,488.75 : x
  2. Step 2: Convert to fraction form
    721,311.29/1,082,065.40 = 300,488.75/x
  3. Step 3: Cross multiply
    721,311.29x = 1,082,065.40 × 300,488.75
  4. Step 4: Simplify right side
    721,311.29x = 325,148,479,464.25
  5. Step 5: Solve for x
    x = 325,148,479,464.25/721,311.29
  6. Step 6: Final answer
    x = 450,774.14

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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.