Home / 1,389,062.70-2,079,446.85-827,808.30

Finding the Fourth Proportional to 1,389,062.70, 2,079,446.85 and 827,808.30

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Solution

The fourth proportional to 1,389,062.70, 2,079,446.85 and 827,808.30 is: 1,239,240.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,062.70 : 2,079,446.85 = 827,808.30 : x
  2. Step 2: Convert to fraction form
    1,389,062.70/2,079,446.85 = 827,808.30/x
  3. Step 3: Cross multiply
    1,389,062.70x = 2,079,446.85 × 827,808.30
  4. Step 4: Simplify right side
    1,389,062.70x = 1,721,383,361,838.86
  5. Step 5: Solve for x
    x = 1,721,383,361,838.86/1,389,062.70
  6. Step 6: Final answer
    x = 1,239,240.94

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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.