Home / 3,986,509.71-5,980,636.67-1,291,107.37

Finding the Fourth Proportional to 3,986,509.71, 5,980,636.67 and 1,291,107.37

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Solution

The fourth proportional to 3,986,509.71, 5,980,636.67 and 1,291,107.37 is: 1,936,943.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,509.71 : 5,980,636.67 = 1,291,107.37 : x
  2. Step 2: Convert to fraction form
    3,986,509.71/5,980,636.67 = 1,291,107.37/x
  3. Step 3: Cross multiply
    3,986,509.71x = 5,980,636.67 × 1,291,107.37
  4. Step 4: Simplify right side
    3,986,509.71x = 7,721,644,081,929.26
  5. Step 5: Solve for x
    x = 7,721,644,081,929.26/3,986,509.71
  6. Step 6: Final answer
    x = 1,936,943.50

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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.