Home / 1,213,979.40-1,821,187.80-504,079.20

Finding the Fourth Proportional to 1,213,979.40, 1,821,187.80 and 504,079.20

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Solution

The fourth proportional to 1,213,979.40, 1,821,187.80 and 504,079.20 is: 756,209.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,979.40 : 1,821,187.80 = 504,079.20 : x
  2. Step 2: Convert to fraction form
    1,213,979.40/1,821,187.80 = 504,079.20/x
  3. Step 3: Cross multiply
    1,213,979.40x = 1,821,187.80 × 504,079.20
  4. Step 4: Simplify right side
    1,213,979.40x = 918,022,889,273.76
  5. Step 5: Solve for x
    x = 918,022,889,273.76/1,213,979.40
  6. Step 6: Final answer
    x = 756,209.61

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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.