Home / 2,608,121.60-3,912,182.40-1,978,265.60

Finding the Fourth Proportional to 2,608,121.60, 3,912,182.40 and 1,978,265.60

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Solution

The fourth proportional to 2,608,121.60, 3,912,182.40 and 1,978,265.60 is: 2,967,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608,121.60 : 3,912,182.40 = 1,978,265.60 : x
  2. Step 2: Convert to fraction form
    2,608,121.60/3,912,182.40 = 1,978,265.60/x
  3. Step 3: Cross multiply
    2,608,121.60x = 3,912,182.40 × 1,978,265.60
  4. Step 4: Simplify right side
    2,608,121.60x = 7,739,335,862,845.44
  5. Step 5: Solve for x
    x = 7,739,335,862,845.44/2,608,121.60
  6. Step 6: Final answer
    x = 2,967,398.40

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Similar ratio
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1.5x scale

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.