Home / 1,107,412.80-1,661,119.20-629,115.90

Finding the Fourth Proportional to 1,107,412.80, 1,661,119.20 and 629,115.90

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Solution

The fourth proportional to 1,107,412.80, 1,661,119.20 and 629,115.90 is: 943,673.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,412.80 : 1,661,119.20 = 629,115.90 : x
  2. Step 2: Convert to fraction form
    1,107,412.80/1,661,119.20 = 629,115.90/x
  3. Step 3: Cross multiply
    1,107,412.80x = 1,661,119.20 × 629,115.90
  4. Step 4: Simplify right side
    1,107,412.80x = 1,045,036,500,515.28
  5. Step 5: Solve for x
    x = 1,045,036,500,515.28/1,107,412.80
  6. Step 6: Final answer
    x = 943,673.85

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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.