Home / 778,559.96-1,074,414.30-420,863.96

Finding the Fourth Proportional to 778,559.96, 1,074,414.30 and 420,863.96

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Solution

The fourth proportional to 778,559.96, 1,074,414.30 and 420,863.96 is: 580,793.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,559.96 : 1,074,414.30 = 420,863.96 : x
  2. Step 2: Convert to fraction form
    778,559.96/1,074,414.30 = 420,863.96/x
  3. Step 3: Cross multiply
    778,559.96x = 1,074,414.30 × 420,863.96
  4. Step 4: Simplify right side
    778,559.96x = 452,182,256,978.63
  5. Step 5: Solve for x
    x = 452,182,256,978.63/778,559.96
  6. Step 6: Final answer
    x = 580,793.11

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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.