Home / 3,986,403.48-5,980,557.78-1,290,731.58

Finding the Fourth Proportional to 3,986,403.48, 5,980,557.78 and 1,290,731.58

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Solution

The fourth proportional to 3,986,403.48, 5,980,557.78 and 1,290,731.58 is: 1,936,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,403.48 : 5,980,557.78 = 1,290,731.58 : x
  2. Step 2: Convert to fraction form
    3,986,403.48/5,980,557.78 = 1,290,731.58/x
  3. Step 3: Cross multiply
    3,986,403.48x = 5,980,557.78 × 1,290,731.58
  4. Step 4: Simplify right side
    3,986,403.48x = 7,719,294,792,660.69
  5. Step 5: Solve for x
    x = 7,719,294,792,660.69/3,986,403.48
  6. Step 6: Final answer
    x = 1,936,405.79

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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.