Home / 778,558.96-1,074,412.92-420,862.96

Finding the Fourth Proportional to 778,558.96, 1,074,412.92 and 420,862.96

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Solution

The fourth proportional to 778,558.96, 1,074,412.92 and 420,862.96 is: 580,791.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,558.96 : 1,074,412.92 = 420,862.96 : x
  2. Step 2: Convert to fraction form
    778,558.96/1,074,412.92 = 420,862.96/x
  3. Step 3: Cross multiply
    778,558.96x = 1,074,412.92 × 420,862.96
  4. Step 4: Simplify right side
    778,558.96x = 452,180,601,773.44
  5. Step 5: Solve for x
    x = 452,180,601,773.44/778,558.96
  6. Step 6: Final answer
    x = 580,791.73

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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.