Home / 3,986,469.80-5,980,287.90-1,290,336.20

Finding the Fourth Proportional to 3,986,469.80, 5,980,287.90 and 1,290,336.20

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Solution

The fourth proportional to 3,986,469.80, 5,980,287.90 and 1,290,336.20 is: 1,935,693.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,469.80 : 5,980,287.90 = 1,290,336.20 : x
  2. Step 2: Convert to fraction form
    3,986,469.80/5,980,287.90 = 1,290,336.20/x
  3. Step 3: Cross multiply
    3,986,469.80x = 5,980,287.90 × 1,290,336.20
  4. Step 4: Simplify right side
    3,986,469.80x = 7,716,581,963,791.98
  5. Step 5: Solve for x
    x = 7,716,581,963,791.98/3,986,469.80
  6. Step 6: Final answer
    x = 1,935,693.07

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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.