Home / 1,387,198.28-2,080,797.39-389,926.28

Finding the Fourth Proportional to 1,387,198.28, 2,080,797.39 and 389,926.28

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Solution

The fourth proportional to 1,387,198.28, 2,080,797.39 and 389,926.28 is: 584,889.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,198.28 : 2,080,797.39 = 389,926.28 : x
  2. Step 2: Convert to fraction form
    1,387,198.28/2,080,797.39 = 389,926.28/x
  3. Step 3: Cross multiply
    1,387,198.28x = 2,080,797.39 × 389,926.28
  4. Step 4: Simplify right side
    1,387,198.28x = 811,357,585,716.41
  5. Step 5: Solve for x
    x = 811,357,585,716.41/1,387,198.28
  6. Step 6: Final answer
    x = 584,889.41

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1.5x scale

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.