Home / 727,661.88-1,004,129.66-405,314.48

Finding the Fourth Proportional to 727,661.88, 1,004,129.66 and 405,314.48

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Solution

The fourth proportional to 727,661.88, 1,004,129.66 and 405,314.48 is: 559,309.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,661.88 : 1,004,129.66 = 405,314.48 : x
  2. Step 2: Convert to fraction form
    727,661.88/1,004,129.66 = 405,314.48/x
  3. Step 3: Cross multiply
    727,661.88x = 1,004,129.66 × 405,314.48
  4. Step 4: Simplify right side
    727,661.88x = 406,988,294,519.09
  5. Step 5: Solve for x
    x = 406,988,294,519.09/727,661.88
  6. Step 6: Final answer
    x = 559,309.63

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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.