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Finding the Fourth Proportional to 550,651.60, 759,910.90 and 308,951.65

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Solution

The fourth proportional to 550,651.60, 759,910.90 and 308,951.65 is: 426,359.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,651.60 : 759,910.90 = 308,951.65 : x
  2. Step 2: Convert to fraction form
    550,651.60/759,910.90 = 308,951.65/x
  3. Step 3: Cross multiply
    550,651.60x = 759,910.90 × 308,951.65
  4. Step 4: Simplify right side
    550,651.60x = 234,775,722,608.43
  5. Step 5: Solve for x
    x = 234,775,722,608.43/550,651.60
  6. Step 6: Final answer
    x = 426,359.83

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1.5x scale

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.