Home / 1,279,215.05-1,765,471.58-728,064.77

Finding the Fourth Proportional to 1,279,215.05, 1,765,471.58 and 728,064.77

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Solution

The fourth proportional to 1,279,215.05, 1,765,471.58 and 728,064.77 is: 1,004,817.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,215.05 : 1,765,471.58 = 728,064.77 : x
  2. Step 2: Convert to fraction form
    1,279,215.05/1,765,471.58 = 728,064.77/x
  3. Step 3: Cross multiply
    1,279,215.05x = 1,765,471.58 × 728,064.77
  4. Step 4: Simplify right side
    1,279,215.05x = 1,285,377,650,096.80
  5. Step 5: Solve for x
    x = 1,285,377,650,096.80/1,279,215.05
  6. Step 6: Final answer
    x = 1,004,817.49

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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.