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Finding the Fourth Proportional to 668,634.82, 922,491.57 and 381,951.88

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Solution

The fourth proportional to 668,634.82, 922,491.57 and 381,951.88 is: 526,965.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,634.82 : 922,491.57 = 381,951.88 : x
  2. Step 2: Convert to fraction form
    668,634.82/922,491.57 = 381,951.88/x
  3. Step 3: Cross multiply
    668,634.82x = 922,491.57 × 381,951.88
  4. Step 4: Simplify right side
    668,634.82x = 352,347,389,445.65
  5. Step 5: Solve for x
    x = 352,347,389,445.65/668,634.82
  6. Step 6: Final answer
    x = 526,965.36

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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.