Home / 3,985,809.60-5,979,589.20-1,965,021.60

Finding the Fourth Proportional to 3,985,809.60, 5,979,589.20 and 1,965,021.60

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Solution

The fourth proportional to 3,985,809.60, 5,979,589.20 and 1,965,021.60 is: 2,947,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,809.60 : 5,979,589.20 = 1,965,021.60 : x
  2. Step 2: Convert to fraction form
    3,985,809.60/5,979,589.20 = 1,965,021.60/x
  3. Step 3: Cross multiply
    3,985,809.60x = 5,979,589.20 × 1,965,021.60
  4. Step 4: Simplify right side
    3,985,809.60x = 11,750,021,937,126.72
  5. Step 5: Solve for x
    x = 11,750,021,937,126.72/3,985,809.60
  6. Step 6: Final answer
    x = 2,947,963.68

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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.