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Finding the Fourth Proportional to 668,464.31, 922,482.27 and 381,983.72

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Solution

The fourth proportional to 668,464.31, 922,482.27 and 381,983.72 is: 527,138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,464.31 : 922,482.27 = 381,983.72 : x
  2. Step 2: Convert to fraction form
    668,464.31/922,482.27 = 381,983.72/x
  3. Step 3: Cross multiply
    668,464.31x = 922,482.27 × 381,983.72
  4. Step 4: Simplify right side
    668,464.31x = 352,373,204,516.23
  5. Step 5: Solve for x
    x = 352,373,204,516.23/668,464.31
  6. Step 6: Final answer
    x = 527,138.39

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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.