Home / 1,287,198.44-1,931,109.80-388,586.52

Finding the Fourth Proportional to 1,287,198.44, 1,931,109.80 and 388,586.52

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Solution

The fourth proportional to 1,287,198.44, 1,931,109.80 and 388,586.52 is: 582,974.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,198.44 : 1,931,109.80 = 388,586.52 : x
  2. Step 2: Convert to fraction form
    1,287,198.44/1,931,109.80 = 388,586.52/x
  3. Step 3: Cross multiply
    1,287,198.44x = 1,931,109.80 × 388,586.52
  4. Step 4: Simplify right side
    1,287,198.44x = 750,403,236,919.90
  5. Step 5: Solve for x
    x = 750,403,236,919.90/1,287,198.44
  6. Step 6: Final answer
    x = 582,974.01

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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.