Home / 3,420,074.40-4,719,287.79-1,970,239.20

Finding the Fourth Proportional to 3,420,074.40, 4,719,287.79 and 1,970,239.20

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Solution

The fourth proportional to 3,420,074.40, 4,719,287.79 and 1,970,239.20 is: 2,718,691.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420,074.40 : 4,719,287.79 = 1,970,239.20 : x
  2. Step 2: Convert to fraction form
    3,420,074.40/4,719,287.79 = 1,970,239.20/x
  3. Step 3: Cross multiply
    3,420,074.40x = 4,719,287.79 × 1,970,239.20
  4. Step 4: Simplify right side
    3,420,074.40x = 9,298,125,799,939.37
  5. Step 5: Solve for x
    x = 9,298,125,799,939.37/3,420,074.40
  6. Step 6: Final answer
    x = 2,718,691.09

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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.