Home / 1,287,169.98-1,931,067.12-388,558.02

Finding the Fourth Proportional to 1,287,169.98, 1,931,067.12 and 388,558.02

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Solution

The fourth proportional to 1,287,169.98, 1,931,067.12 and 388,558.02 is: 582,931.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,169.98 : 1,931,067.12 = 388,558.02 : x
  2. Step 2: Convert to fraction form
    1,287,169.98/1,931,067.12 = 388,558.02/x
  3. Step 3: Cross multiply
    1,287,169.98x = 1,931,067.12 × 388,558.02
  4. Step 4: Simplify right side
    1,287,169.98x = 750,331,616,634.30
  5. Step 5: Solve for x
    x = 750,331,616,634.30/1,287,169.98
  6. Step 6: Final answer
    x = 582,931.26

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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.