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Finding the Fourth Proportional to 428,652.50, 591,269.33 and 275,427.34

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Solution

The fourth proportional to 428,652.50, 591,269.33 and 275,427.34 is: 379,915.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,652.50 : 591,269.33 = 275,427.34 : x
  2. Step 2: Convert to fraction form
    428,652.50/591,269.33 = 275,427.34/x
  3. Step 3: Cross multiply
    428,652.50x = 591,269.33 × 275,427.34
  4. Step 4: Simplify right side
    428,652.50x = 162,851,737,995.88
  5. Step 5: Solve for x
    x = 162,851,737,995.88/428,652.50
  6. Step 6: Final answer
    x = 379,915.53

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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.