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Finding the Fourth Proportional to 831,453.72, 1,147,407 and 449,480.52

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Solution

The fourth proportional to 831,453.72, 1,147,407 and 449,480.52 is: 620,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,453.72 : 1,147,407 = 449,480.52 : x
  2. Step 2: Convert to fraction form
    831,453.72/1,147,407 = 449,480.52/x
  3. Step 3: Cross multiply
    831,453.72x = 1,147,407 × 449,480.52
  4. Step 4: Simplify right side
    831,453.72x = 515,737,095,011.64
  5. Step 5: Solve for x
    x = 515,737,095,011.64/831,453.72
  6. Step 6: Final answer
    x = 620,283.59

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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.