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Finding the Fourth Proportional to 812,992.56, 1,219,230.50 and 759,922.30

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Solution

The fourth proportional to 812,992.56, 1,219,230.50 and 759,922.30 is: 1,139,641.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,992.56 : 1,219,230.50 = 759,922.30 : x
  2. Step 2: Convert to fraction form
    812,992.56/1,219,230.50 = 759,922.30/x
  3. Step 3: Cross multiply
    812,992.56x = 1,219,230.50 × 759,922.30
  4. Step 4: Simplify right side
    812,992.56x = 926,520,445,790.15
  5. Step 5: Solve for x
    x = 926,520,445,790.15/812,992.56
  6. Step 6: Final answer
    x = 1,139,641.97

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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.