Home / 3,987,249.60-5,980,959.12-1,428,631.20

Finding the Fourth Proportional to 3,987,249.60, 5,980,959.12 and 1,428,631.20

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Solution

The fourth proportional to 3,987,249.60, 5,980,959.12 and 1,428,631.20 is: 2,142,977.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,249.60 : 5,980,959.12 = 1,428,631.20 : x
  2. Step 2: Convert to fraction form
    3,987,249.60/5,980,959.12 = 1,428,631.20/x
  3. Step 3: Cross multiply
    3,987,249.60x = 5,980,959.12 × 1,428,631.20
  4. Step 4: Simplify right side
    3,987,249.60x = 8,544,584,804,756.54
  5. Step 5: Solve for x
    x = 8,544,584,804,756.54/3,987,249.60
  6. Step 6: Final answer
    x = 2,142,977.16

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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.