Home / 685,369.27-1,028,164.07-235,979.65

Finding the Fourth Proportional to 685,369.27, 1,028,164.07 and 235,979.65

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Solution

The fourth proportional to 685,369.27, 1,028,164.07 and 235,979.65 is: 354,007.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,369.27 : 1,028,164.07 = 235,979.65 : x
  2. Step 2: Convert to fraction form
    685,369.27/1,028,164.07 = 235,979.65/x
  3. Step 3: Cross multiply
    685,369.27x = 1,028,164.07 × 235,979.65
  4. Step 4: Simplify right side
    685,369.27x = 242,625,797,381.18
  5. Step 5: Solve for x
    x = 242,625,797,381.18/685,369.27
  6. Step 6: Final answer
    x = 354,007.41

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Double scale
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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.