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Finding the Fourth Proportional to 449,241.72, 620,609.39 and 388,707.27

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Solution

The fourth proportional to 449,241.72, 620,609.39 and 388,707.27 is: 536,983.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,241.72 : 620,609.39 = 388,707.27 : x
  2. Step 2: Convert to fraction form
    449,241.72/620,609.39 = 388,707.27/x
  3. Step 3: Cross multiply
    449,241.72x = 620,609.39 × 388,707.27
  4. Step 4: Simplify right side
    449,241.72x = 241,235,379,591.99
  5. Step 5: Solve for x
    x = 241,235,379,591.99/449,241.72
  6. Step 6: Final answer
    x = 536,983.48

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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.