Home / 727,608.39-1,004,129.85-405,318.42

Finding the Fourth Proportional to 727,608.39, 1,004,129.85 and 405,318.42

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Solution

The fourth proportional to 727,608.39, 1,004,129.85 and 405,318.42 is: 559,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,608.39 : 1,004,129.85 = 405,318.42 : x
  2. Step 2: Convert to fraction form
    727,608.39/1,004,129.85 = 405,318.42/x
  3. Step 3: Cross multiply
    727,608.39x = 1,004,129.85 × 405,318.42
  4. Step 4: Simplify right side
    727,608.39x = 406,992,324,276.84
  5. Step 5: Solve for x
    x = 406,992,324,276.84/727,608.39
  6. Step 6: Final answer
    x = 559,356.28

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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.