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Finding the Fourth Proportional to 647,869.90, 894,059.85 and 361,389.82

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Solution

The fourth proportional to 647,869.90, 894,059.85 and 361,389.82 is: 498,717.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,869.90 : 894,059.85 = 361,389.82 : x
  2. Step 2: Convert to fraction form
    647,869.90/894,059.85 = 361,389.82/x
  3. Step 3: Cross multiply
    647,869.90x = 894,059.85 × 361,389.82
  4. Step 4: Simplify right side
    647,869.90x = 323,104,128,260.73
  5. Step 5: Solve for x
    x = 323,104,128,260.73/647,869.90
  6. Step 6: Final answer
    x = 498,717.61

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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.