Home / 1,959,939.20-2,939,908.80-838,121.60

Finding the Fourth Proportional to 1,959,939.20, 2,939,908.80 and 838,121.60

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Solution

The fourth proportional to 1,959,939.20, 2,939,908.80 and 838,121.60 is: 1,257,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959,939.20 : 2,939,908.80 = 838,121.60 : x
  2. Step 2: Convert to fraction form
    1,959,939.20/2,939,908.80 = 838,121.60/x
  3. Step 3: Cross multiply
    1,959,939.20x = 2,939,908.80 × 838,121.60
  4. Step 4: Simplify right side
    1,959,939.20x = 2,464,001,067,310.08
  5. Step 5: Solve for x
    x = 2,464,001,067,310.08/1,959,939.20
  6. Step 6: Final answer
    x = 1,257,182.40

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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.