Home / 2,187,073.20-3,281,128.20-1,122,279.60

Finding the Fourth Proportional to 2,187,073.20, 3,281,128.20 and 1,122,279.60

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Solution

The fourth proportional to 2,187,073.20, 3,281,128.20 and 1,122,279.60 is: 1,683,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,073.20 : 3,281,128.20 = 1,122,279.60 : x
  2. Step 2: Convert to fraction form
    2,187,073.20/3,281,128.20 = 1,122,279.60/x
  3. Step 3: Cross multiply
    2,187,073.20x = 3,281,128.20 × 1,122,279.60
  4. Step 4: Simplify right side
    2,187,073.20x = 3,682,343,243,844.72
  5. Step 5: Solve for x
    x = 3,682,343,243,844.72/2,187,073.20
  6. Step 6: Final answer
    x = 1,683,685.41

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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.