Home / 2,128,626.40-3,192,939.60-780,340.90

Finding the Fourth Proportional to 2,128,626.40, 3,192,939.60 and 780,340.90

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Solution

The fourth proportional to 2,128,626.40, 3,192,939.60 and 780,340.90 is: 1,170,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,626.40 : 3,192,939.60 = 780,340.90 : x
  2. Step 2: Convert to fraction form
    2,128,626.40/3,192,939.60 = 780,340.90/x
  3. Step 3: Cross multiply
    2,128,626.40x = 3,192,939.60 × 780,340.90
  4. Step 4: Simplify right side
    2,128,626.40x = 2,491,581,361,109.64
  5. Step 5: Solve for x
    x = 2,491,581,361,109.64/2,128,626.40
  6. Step 6: Final answer
    x = 1,170,511.35

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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.