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Finding the Fourth Proportional to 648,383.45, 894,782.63 and 361,915.61

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Solution

The fourth proportional to 648,383.45, 894,782.63 and 361,915.61 is: 499,451.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,383.45 : 894,782.63 = 361,915.61 : x
  2. Step 2: Convert to fraction form
    648,383.45/894,782.63 = 361,915.61/x
  3. Step 3: Cross multiply
    648,383.45x = 894,782.63 × 361,915.61
  4. Step 4: Simplify right side
    648,383.45x = 323,835,797,784.73
  5. Step 5: Solve for x
    x = 323,835,797,784.73/648,383.45
  6. Step 6: Final answer
    x = 499,451.06

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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.