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Finding the Fourth Proportional to 1,269,371.72, 1,904,372.72 and 629,975.54

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Solution

The fourth proportional to 1,269,371.72, 1,904,372.72 and 629,975.54 is: 945,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,371.72 : 1,904,372.72 = 629,975.54 : x
  2. Step 2: Convert to fraction form
    1,269,371.72/1,904,372.72 = 629,975.54/x
  3. Step 3: Cross multiply
    1,269,371.72x = 1,904,372.72 × 629,975.54
  4. Step 4: Simplify right side
    1,269,371.72x = 1,199,708,219,971.53
  5. Step 5: Solve for x
    x = 1,199,708,219,971.53/1,269,371.72
  6. Step 6: Final answer
    x = 945,119.70

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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.