Home / 728,010.09-1,004,682.96-405,717.30

Finding the Fourth Proportional to 728,010.09, 1,004,682.96 and 405,717.30

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Solution

The fourth proportional to 728,010.09, 1,004,682.96 and 405,717.30 is: 559,906.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,010.09 : 1,004,682.96 = 405,717.30 : x
  2. Step 2: Convert to fraction form
    728,010.09/1,004,682.96 = 405,717.30/x
  3. Step 3: Cross multiply
    728,010.09x = 1,004,682.96 × 405,717.30
  4. Step 4: Simplify right side
    728,010.09x = 407,617,257,887.21
  5. Step 5: Solve for x
    x = 407,617,257,887.21/728,010.09
  6. Step 6: Final answer
    x = 559,906.06

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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.