Home / 1,379,971.80-1,904,382.62-768,131.22

Finding the Fourth Proportional to 1,379,971.80, 1,904,382.62 and 768,131.22

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Solution

The fourth proportional to 1,379,971.80, 1,904,382.62 and 768,131.22 is: 1,060,033.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,971.80 : 1,904,382.62 = 768,131.22 : x
  2. Step 2: Convert to fraction form
    1,379,971.80/1,904,382.62 = 768,131.22/x
  3. Step 3: Cross multiply
    1,379,971.80x = 1,904,382.62 × 768,131.22
  4. Step 4: Simplify right side
    1,379,971.80x = 1,462,815,745,247.40
  5. Step 5: Solve for x
    x = 1,462,815,745,247.40/1,379,971.80
  6. Step 6: Final answer
    x = 1,060,033.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.