Home / 1,987,309.40-2,980,964.10-725,629.10

Finding the Fourth Proportional to 1,987,309.40, 2,980,964.10 and 725,629.10

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Solution

The fourth proportional to 1,987,309.40, 2,980,964.10 and 725,629.10 is: 1,088,443.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,309.40 : 2,980,964.10 = 725,629.10 : x
  2. Step 2: Convert to fraction form
    1,987,309.40/2,980,964.10 = 725,629.10/x
  3. Step 3: Cross multiply
    1,987,309.40x = 2,980,964.10 × 725,629.10
  4. Step 4: Simplify right side
    1,987,309.40x = 2,163,074,297,015.31
  5. Step 5: Solve for x
    x = 2,163,074,297,015.31/1,987,309.40
  6. Step 6: Final answer
    x = 1,088,443.65

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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.