Home / 5,180,276.38-7,765,982.52-1,987,693.78

Finding the Fourth Proportional to 5,180,276.38, 7,765,982.52 and 1,987,693.78

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Solution

The fourth proportional to 5,180,276.38, 7,765,982.52 and 1,987,693.78 is: 2,979,840.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180,276.38 : 7,765,982.52 = 1,987,693.78 : x
  2. Step 2: Convert to fraction form
    5,180,276.38/7,765,982.52 = 1,987,693.78/x
  3. Step 3: Cross multiply
    5,180,276.38x = 7,765,982.52 × 1,987,693.78
  4. Step 4: Simplify right side
    5,180,276.38x = 15,436,395,150,592.72
  5. Step 5: Solve for x
    x = 15,436,395,150,592.72/5,180,276.38
  6. Step 6: Final answer
    x = 2,979,840.07

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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.