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Finding the Fourth Proportional to 647,872.38, 894,082.89 and 361,386.32

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Solution

The fourth proportional to 647,872.38, 894,082.89 and 361,386.32 is: 498,723.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,872.38 : 894,082.89 = 361,386.32 : x
  2. Step 2: Convert to fraction form
    647,872.38/894,082.89 = 361,386.32/x
  3. Step 3: Cross multiply
    647,872.38x = 894,082.89 × 361,386.32
  4. Step 4: Simplify right side
    647,872.38x = 323,109,320,921.65
  5. Step 5: Solve for x
    x = 323,109,320,921.65/647,872.38
  6. Step 6: Final answer
    x = 498,723.72

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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.