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Finding the Fourth Proportional to 809,489.60, 1,214,234.40 and 809,489.60

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Solution

The fourth proportional to 809,489.60, 1,214,234.40 and 809,489.60 is: 1,214,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,489.60 : 1,214,234.40 = 809,489.60 : x
  2. Step 2: Convert to fraction form
    809,489.60/1,214,234.40 = 809,489.60/x
  3. Step 3: Cross multiply
    809,489.60x = 1,214,234.40 × 809,489.60
  4. Step 4: Simplify right side
    809,489.60x = 982,910,118,762.24
  5. Step 5: Solve for x
    x = 982,910,118,762.24/809,489.60
  6. Step 6: Final answer
    x = 1,214,234.40

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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.