Home / 3,418,461.40-5,128,469.70-1,997,786.20

Finding the Fourth Proportional to 3,418,461.40, 5,128,469.70 and 1,997,786.20

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Solution

The fourth proportional to 3,418,461.40, 5,128,469.70 and 1,997,786.20 is: 2,997,133.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418,461.40 : 5,128,469.70 = 1,997,786.20 : x
  2. Step 2: Convert to fraction form
    3,418,461.40/5,128,469.70 = 1,997,786.20/x
  3. Step 3: Cross multiply
    3,418,461.40x = 5,128,469.70 × 1,997,786.20
  4. Step 4: Simplify right side
    3,418,461.40x = 10,245,585,993,778.14
  5. Step 5: Solve for x
    x = 10,245,585,993,778.14/3,418,461.40
  6. Step 6: Final answer
    x = 2,997,133.74

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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.