Home / 3,979,615.73-5,970,685.43-1,420,775.78

Finding the Fourth Proportional to 3,979,615.73, 5,970,685.43 and 1,420,775.78

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Solution

The fourth proportional to 3,979,615.73, 5,970,685.43 and 1,420,775.78 is: 2,131,614.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979,615.73 : 5,970,685.43 = 1,420,775.78 : x
  2. Step 2: Convert to fraction form
    3,979,615.73/5,970,685.43 = 1,420,775.78/x
  3. Step 3: Cross multiply
    3,979,615.73x = 5,970,685.43 × 1,420,775.78
  4. Step 4: Simplify right side
    3,979,615.73x = 8,483,005,222,641.40
  5. Step 5: Solve for x
    x = 8,483,005,222,641.40/3,979,615.73
  6. Step 6: Final answer
    x = 2,131,614.16

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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.