Home / 2,137,982.72-2,950,256.12-1,220,186.30

Finding the Fourth Proportional to 2,137,982.72, 2,950,256.12 and 1,220,186.30

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Solution

The fourth proportional to 2,137,982.72, 2,950,256.12 and 1,220,186.30 is: 1,683,765.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137,982.72 : 2,950,256.12 = 1,220,186.30 : x
  2. Step 2: Convert to fraction form
    2,137,982.72/2,950,256.12 = 1,220,186.30/x
  3. Step 3: Cross multiply
    2,137,982.72x = 2,950,256.12 × 1,220,186.30
  4. Step 4: Simplify right side
    2,137,982.72x = 3,599,862,099,115.16
  5. Step 5: Solve for x
    x = 3,599,862,099,115.16/2,137,982.72
  6. Step 6: Final answer
    x = 1,683,765.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.