Home / 2,100,080.40-3,150,621.72-680,139.60

Finding the Fourth Proportional to 2,100,080.40, 3,150,621.72 and 680,139.60

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Solution

The fourth proportional to 2,100,080.40, 3,150,621.72 and 680,139.60 is: 1,020,371.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100,080.40 : 3,150,621.72 = 680,139.60 : x
  2. Step 2: Convert to fraction form
    2,100,080.40/3,150,621.72 = 680,139.60/x
  3. Step 3: Cross multiply
    2,100,080.40x = 3,150,621.72 × 680,139.60
  4. Step 4: Simplify right side
    2,100,080.40x = 2,142,862,596,392.11
  5. Step 5: Solve for x
    x = 2,142,862,596,392.11/2,100,080.40
  6. Step 6: Final answer
    x = 1,020,371.69

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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.