Home / 1,145,789.92-1,581,234.96-783,972.64

Finding the Fourth Proportional to 1,145,789.92, 1,581,234.96 and 783,972.64

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Solution

The fourth proportional to 1,145,789.92, 1,581,234.96 and 783,972.64 is: 1,081,912.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,789.92 : 1,581,234.96 = 783,972.64 : x
  2. Step 2: Convert to fraction form
    1,145,789.92/1,581,234.96 = 783,972.64/x
  3. Step 3: Cross multiply
    1,145,789.92x = 1,581,234.96 × 783,972.64
  4. Step 4: Simplify right side
    1,145,789.92x = 1,239,644,946,051.49
  5. Step 5: Solve for x
    x = 1,239,644,946,051.49/1,145,789.92
  6. Step 6: Final answer
    x = 1,081,912.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.