Home / 1,291,067.80-1,936,601.70-992,469.40

Finding the Fourth Proportional to 1,291,067.80, 1,936,601.70 and 992,469.40

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Solution

The fourth proportional to 1,291,067.80, 1,936,601.70 and 992,469.40 is: 1,488,704.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,067.80 : 1,936,601.70 = 992,469.40 : x
  2. Step 2: Convert to fraction form
    1,291,067.80/1,936,601.70 = 992,469.40/x
  3. Step 3: Cross multiply
    1,291,067.80x = 1,936,601.70 × 992,469.40
  4. Step 4: Simplify right side
    1,291,067.80x = 1,922,017,927,237.98
  5. Step 5: Solve for x
    x = 1,922,017,927,237.98/1,291,067.80
  6. Step 6: Final answer
    x = 1,488,704.10

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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.