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Finding the Fourth Proportional to 618,503.62, 853,520.52 and 363,871.18

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Solution

The fourth proportional to 618,503.62, 853,520.52 and 363,871.18 is: 502,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,503.62 : 853,520.52 = 363,871.18 : x
  2. Step 2: Convert to fraction form
    618,503.62/853,520.52 = 363,871.18/x
  3. Step 3: Cross multiply
    618,503.62x = 853,520.52 × 363,871.18
  4. Step 4: Simplify right side
    618,503.62x = 310,571,518,766.61
  5. Step 5: Solve for x
    x = 310,571,518,766.61/618,503.62
  6. Step 6: Final answer
    x = 502,133.71

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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.