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Finding the Fourth Proportional to 618,581.10, 853,601.50 and 363,883.08

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Solution

The fourth proportional to 618,581.10, 853,601.50 and 363,883.08 is: 502,134.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,581.10 : 853,601.50 = 363,883.08 : x
  2. Step 2: Convert to fraction form
    618,581.10/853,601.50 = 363,883.08/x
  3. Step 3: Cross multiply
    618,581.10x = 853,601.50 × 363,883.08
  4. Step 4: Simplify right side
    618,581.10x = 310,611,142,912.62
  5. Step 5: Solve for x
    x = 310,611,142,912.62/618,581.10
  6. Step 6: Final answer
    x = 502,134.87

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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.