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Finding the Fourth Proportional to 668,378.52, 922,411.19 and 381,892.46

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Solution

The fourth proportional to 668,378.52, 922,411.19 and 381,892.46 is: 527,039.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,378.52 : 922,411.19 = 381,892.46 : x
  2. Step 2: Convert to fraction form
    668,378.52/922,411.19 = 381,892.46/x
  3. Step 3: Cross multiply
    668,378.52x = 922,411.19 × 381,892.46
  4. Step 4: Simplify right side
    668,378.52x = 352,261,874,823.30
  5. Step 5: Solve for x
    x = 352,261,874,823.30/668,378.52
  6. Step 6: Final answer
    x = 527,039.49

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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.