Home / 2,661,219.40-3,991,829.10-978,104.20

Finding the Fourth Proportional to 2,661,219.40, 3,991,829.10 and 978,104.20

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Solution

The fourth proportional to 2,661,219.40, 3,991,829.10 and 978,104.20 is: 1,467,156.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,219.40 : 3,991,829.10 = 978,104.20 : x
  2. Step 2: Convert to fraction form
    2,661,219.40/3,991,829.10 = 978,104.20/x
  3. Step 3: Cross multiply
    2,661,219.40x = 3,991,829.10 × 978,104.20
  4. Step 4: Simplify right side
    2,661,219.40x = 3,904,424,808,392.22
  5. Step 5: Solve for x
    x = 3,904,424,808,392.22/2,661,219.40
  6. Step 6: Final answer
    x = 1,467,156.30

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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.