Home / 1,387,942.80-2,078,803.80-1,139,110.80

Finding the Fourth Proportional to 1,387,942.80, 2,078,803.80 and 1,139,110.80

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Solution

The fourth proportional to 1,387,942.80, 2,078,803.80 and 1,139,110.80 is: 1,706,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,942.80 : 2,078,803.80 = 1,139,110.80 : x
  2. Step 2: Convert to fraction form
    1,387,942.80/2,078,803.80 = 1,139,110.80/x
  3. Step 3: Cross multiply
    1,387,942.80x = 2,078,803.80 × 1,139,110.80
  4. Step 4: Simplify right side
    1,387,942.80x = 2,367,987,859,661.04
  5. Step 5: Solve for x
    x = 2,367,987,859,661.04/1,387,942.80
  6. Step 6: Final answer
    x = 1,706,113.44

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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.