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Finding the Fourth Proportional to 667,600, 921,309.60 and 365,813.44

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Solution

The fourth proportional to 667,600, 921,309.60 and 365,813.44 is: 504,834.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,600 : 921,309.60 = 365,813.44 : x
  2. Step 2: Convert to fraction form
    667,600/921,309.60 = 365,813.44/x
  3. Step 3: Cross multiply
    667,600x = 921,309.60 × 365,813.44
  4. Step 4: Simplify right side
    667,600x = 337,027,434,081.02
  5. Step 5: Solve for x
    x = 337,027,434,081.02/667,600
  6. Step 6: Final answer
    x = 504,834.38

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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.