Home / 2,140,615.90-3,209,989.44-809,986.78

Finding the Fourth Proportional to 2,140,615.90, 3,209,989.44 and 809,986.78

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Solution

The fourth proportional to 2,140,615.90, 3,209,989.44 and 809,986.78 is: 1,214,626.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140,615.90 : 3,209,989.44 = 809,986.78 : x
  2. Step 2: Convert to fraction form
    2,140,615.90/3,209,989.44 = 809,986.78/x
  3. Step 3: Cross multiply
    2,140,615.90x = 3,209,989.44 × 809,986.78
  4. Step 4: Simplify right side
    2,140,615.90x = 2,600,049,010,339.60
  5. Step 5: Solve for x
    x = 2,600,049,010,339.60/2,140,615.90
  6. Step 6: Final answer
    x = 1,214,626.60

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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.