Home / 1,027,638.80-1,541,458.20-428,400.80

Finding the Fourth Proportional to 1,027,638.80, 1,541,458.20 and 428,400.80

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Solution

The fourth proportional to 1,027,638.80, 1,541,458.20 and 428,400.80 is: 642,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027,638.80 : 1,541,458.20 = 428,400.80 : x
  2. Step 2: Convert to fraction form
    1,027,638.80/1,541,458.20 = 428,400.80/x
  3. Step 3: Cross multiply
    1,027,638.80x = 1,541,458.20 × 428,400.80
  4. Step 4: Simplify right side
    1,027,638.80x = 660,361,926,046.56
  5. Step 5: Solve for x
    x = 660,361,926,046.56/1,027,638.80
  6. Step 6: Final answer
    x = 642,601.20

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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.