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Finding the Fourth Proportional to 389,610.30, 584,415.45 and 373,863.90

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Solution

The fourth proportional to 389,610.30, 584,415.45 and 373,863.90 is: 560,795.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,610.30 : 584,415.45 = 373,863.90 : x
  2. Step 2: Convert to fraction form
    389,610.30/584,415.45 = 373,863.90/x
  3. Step 3: Cross multiply
    389,610.30x = 584,415.45 × 373,863.90
  4. Step 4: Simplify right side
    389,610.30x = 218,491,839,357.26
  5. Step 5: Solve for x
    x = 218,491,839,357.26/389,610.30
  6. Step 6: Final answer
    x = 560,795.85

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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.