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Finding the Fourth Proportional to 636,668.22, 878,727 and 364,918.32

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Solution

The fourth proportional to 636,668.22, 878,727 and 364,918.32 is: 503,658.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,668.22 : 878,727 = 364,918.32 : x
  2. Step 2: Convert to fraction form
    636,668.22/878,727 = 364,918.32/x
  3. Step 3: Cross multiply
    636,668.22x = 878,727 × 364,918.32
  4. Step 4: Simplify right side
    636,668.22x = 320,663,580,578.64
  5. Step 5: Solve for x
    x = 320,663,580,578.64/636,668.22
  6. Step 6: Final answer
    x = 503,658.85

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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.