Home / 3,420,721.80-4,721,096.88-1,970,134.92

Finding the Fourth Proportional to 3,420,721.80, 4,721,096.88 and 1,970,134.92

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Solution

The fourth proportional to 3,420,721.80, 4,721,096.88 and 1,970,134.92 is: 2,719,074.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420,721.80 : 4,721,096.88 = 1,970,134.92 : x
  2. Step 2: Convert to fraction form
    3,420,721.80/4,721,096.88 = 1,970,134.92/x
  3. Step 3: Cross multiply
    3,420,721.80x = 4,721,096.88 × 1,970,134.92
  4. Step 4: Simplify right side
    3,420,721.80x = 9,301,197,823,991.05
  5. Step 5: Solve for x
    x = 9,301,197,823,991.05/3,420,721.80
  6. Step 6: Final answer
    x = 2,719,074.62

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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.