Home / 3,986,507.21-5,980,632.91-1,291,104.87

Finding the Fourth Proportional to 3,986,507.21, 5,980,632.91 and 1,291,104.87

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Solution

The fourth proportional to 3,986,507.21, 5,980,632.91 and 1,291,104.87 is: 1,936,939.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,507.21 : 5,980,632.91 = 1,291,104.87 : x
  2. Step 2: Convert to fraction form
    3,986,507.21/5,980,632.91 = 1,291,104.87/x
  3. Step 3: Cross multiply
    3,986,507.21x = 5,980,632.91 × 1,291,104.87
  4. Step 4: Simplify right side
    3,986,507.21x = 7,721,624,250,128.14
  5. Step 5: Solve for x
    x = 7,721,624,250,128.14/3,986,507.21
  6. Step 6: Final answer
    x = 1,936,939.75

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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.