Home / 389,618.55-584,446.05-123,399.90

Finding the Fourth Proportional to 389,618.55, 584,446.05 and 123,399.90

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Solution

The fourth proportional to 389,618.55, 584,446.05 and 123,399.90 is: 185,105.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,618.55 : 584,446.05 = 123,399.90 : x
  2. Step 2: Convert to fraction form
    389,618.55/584,446.05 = 123,399.90/x
  3. Step 3: Cross multiply
    389,618.55x = 584,446.05 × 123,399.90
  4. Step 4: Simplify right side
    389,618.55x = 72,120,584,125.40
  5. Step 5: Solve for x
    x = 72,120,584,125.40/389,618.55
  6. Step 6: Final answer
    x = 185,105.62

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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.