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Finding the Fourth Proportional to 641,558.26, 885,199.96 and 438,033

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Solution

The fourth proportional to 641,558.26, 885,199.96 and 438,033 is: 604,382.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,558.26 : 885,199.96 = 438,033 : x
  2. Step 2: Convert to fraction form
    641,558.26/885,199.96 = 438,033/x
  3. Step 3: Cross multiply
    641,558.26x = 885,199.96 × 438,033
  4. Step 4: Simplify right side
    641,558.26x = 387,746,794,078.68
  5. Step 5: Solve for x
    x = 387,746,794,078.68/641,558.26
  6. Step 6: Final answer
    x = 604,382.83

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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.