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Finding the Fourth Proportional to 636,323.22, 878,128.29 and 349,861.32

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Solution

The fourth proportional to 636,323.22, 878,128.29 and 349,861.32 is: 482,809.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,323.22 : 878,128.29 = 349,861.32 : x
  2. Step 2: Convert to fraction form
    636,323.22/878,128.29 = 349,861.32/x
  3. Step 3: Cross multiply
    636,323.22x = 878,128.29 × 349,861.32
  4. Step 4: Simplify right side
    636,323.22x = 307,223,122,668.74
  5. Step 5: Solve for x
    x = 307,223,122,668.74/636,323.22
  6. Step 6: Final answer
    x = 482,809.86

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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.