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Finding the Fourth Proportional to 693,774.40, 1,040,690.40 and 220,446.40

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Solution

The fourth proportional to 693,774.40, 1,040,690.40 and 220,446.40 is: 330,678.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,774.40 : 1,040,690.40 = 220,446.40 : x
  2. Step 2: Convert to fraction form
    693,774.40/1,040,690.40 = 220,446.40/x
  3. Step 3: Cross multiply
    693,774.40x = 1,040,690.40 × 220,446.40
  4. Step 4: Simplify right side
    693,774.40x = 229,416,452,194.56
  5. Step 5: Solve for x
    x = 229,416,452,194.56/693,774.40
  6. Step 6: Final answer
    x = 330,678.75

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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.