Home / 2,099,997.20-3,149,995.80-1,298,680.40

Finding the Fourth Proportional to 2,099,997.20, 3,149,995.80 and 1,298,680.40

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Solution

The fourth proportional to 2,099,997.20, 3,149,995.80 and 1,298,680.40 is: 1,948,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099,997.20 : 3,149,995.80 = 1,298,680.40 : x
  2. Step 2: Convert to fraction form
    2,099,997.20/3,149,995.80 = 1,298,680.40/x
  3. Step 3: Cross multiply
    2,099,997.20x = 3,149,995.80 × 1,298,680.40
  4. Step 4: Simplify right side
    2,099,997.20x = 4,090,837,805,542.32
  5. Step 5: Solve for x
    x = 4,090,837,805,542.32/2,099,997.20
  6. Step 6: Final answer
    x = 1,948,020.60

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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.