Home / 3,986,359.55-5,980,489.68-1,290,685.57

Finding the Fourth Proportional to 3,986,359.55, 5,980,489.68 and 1,290,685.57

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Solution

The fourth proportional to 3,986,359.55, 5,980,489.68 and 1,290,685.57 is: 1,936,336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,359.55 : 5,980,489.68 = 1,290,685.57 : x
  2. Step 2: Convert to fraction form
    3,986,359.55/5,980,489.68 = 1,290,685.57/x
  3. Step 3: Cross multiply
    3,986,359.55x = 5,980,489.68 × 1,290,685.57
  4. Step 4: Simplify right side
    3,986,359.55x = 7,718,931,731,509.92
  5. Step 5: Solve for x
    x = 7,718,931,731,509.92/3,986,359.55
  6. Step 6: Final answer
    x = 1,936,336.06

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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.