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Finding the Fourth Proportional to 647,630.43, 893,733.90 and 361,168.65

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Solution

The fourth proportional to 647,630.43, 893,733.90 and 361,168.65 is: 498,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,630.43 : 893,733.90 = 361,168.65 : x
  2. Step 2: Convert to fraction form
    647,630.43/893,733.90 = 361,168.65/x
  3. Step 3: Cross multiply
    647,630.43x = 893,733.90 × 361,168.65
  4. Step 4: Simplify right side
    647,630.43x = 322,788,666,122.24
  5. Step 5: Solve for x
    x = 322,788,666,122.24/647,630.43
  6. Step 6: Final answer
    x = 498,414.92

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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.