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Finding the Fourth Proportional to 618,964.00, 928,446.03 and 408,552.73

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Solution

The fourth proportional to 618,964.00, 928,446.03 and 408,552.73 is: 612,829.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,964.00 : 928,446.03 = 408,552.73 : x
  2. Step 2: Convert to fraction form
    618,964.00/928,446.03 = 408,552.73/x
  3. Step 3: Cross multiply
    618,964.00x = 928,446.03 × 408,552.73
  4. Step 4: Simplify right side
    618,964.00x = 379,319,157,893.05
  5. Step 5: Solve for x
    x = 379,319,157,893.05/618,964.00
  6. Step 6: Final answer
    x = 612,829.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.