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Finding the Fourth Proportional to 618,770.72, 928,570.80 and 397,310.24

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Solution

The fourth proportional to 618,770.72, 928,570.80 and 397,310.24 is: 596,231.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,770.72 : 928,570.80 = 397,310.24 : x
  2. Step 2: Convert to fraction form
    618,770.72/928,570.80 = 397,310.24/x
  3. Step 3: Cross multiply
    618,770.72x = 928,570.80 × 397,310.24
  4. Step 4: Simplify right side
    618,770.72x = 368,930,687,404.99
  5. Step 5: Solve for x
    x = 368,930,687,404.99/618,770.72
  6. Step 6: Final answer
    x = 596,231.65

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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.