Home / 3,117,821.20-4,673,232.60-1,320,398.80

Finding the Fourth Proportional to 3,117,821.20, 4,673,232.60 and 1,320,398.80

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Solution

The fourth proportional to 3,117,821.20, 4,673,232.60 and 1,320,398.80 is: 1,979,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117,821.20 : 4,673,232.60 = 1,320,398.80 : x
  2. Step 2: Convert to fraction form
    3,117,821.20/4,673,232.60 = 1,320,398.80/x
  3. Step 3: Cross multiply
    3,117,821.20x = 4,673,232.60 × 1,320,398.80
  4. Step 4: Simplify right side
    3,117,821.20x = 6,170,530,717,160.88
  5. Step 5: Solve for x
    x = 6,170,530,717,160.88/3,117,821.20
  6. Step 6: Final answer
    x = 1,979,116.29

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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.