Home / 1,279,485.20-1,918,306.20-718,691.60

Finding the Fourth Proportional to 1,279,485.20, 1,918,306.20 and 718,691.60

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Solution

The fourth proportional to 1,279,485.20, 1,918,306.20 and 718,691.60 is: 1,077,519.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,485.20 : 1,918,306.20 = 718,691.60 : x
  2. Step 2: Convert to fraction form
    1,279,485.20/1,918,306.20 = 718,691.60/x
  3. Step 3: Cross multiply
    1,279,485.20x = 1,918,306.20 × 718,691.60
  4. Step 4: Simplify right side
    1,279,485.20x = 1,378,670,552,167.92
  5. Step 5: Solve for x
    x = 1,378,670,552,167.92/1,279,485.20
  6. Step 6: Final answer
    x = 1,077,519.73

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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.