Home / 2,661,402.20-3,992,103.30-978,157.40

Finding the Fourth Proportional to 2,661,402.20, 3,992,103.30 and 978,157.40

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Solution

The fourth proportional to 2,661,402.20, 3,992,103.30 and 978,157.40 is: 1,467,236.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,402.20 : 3,992,103.30 = 978,157.40 : x
  2. Step 2: Convert to fraction form
    2,661,402.20/3,992,103.30 = 978,157.40/x
  3. Step 3: Cross multiply
    2,661,402.20x = 3,992,103.30 × 978,157.40
  4. Step 4: Simplify right side
    2,661,402.20x = 3,904,905,384,459.42
  5. Step 5: Solve for x
    x = 3,904,905,384,459.42/2,661,402.20
  6. Step 6: Final answer
    x = 1,467,236.10

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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.