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Finding the Fourth Proportional to 667,283.89, 920,918.01 and 380,847.24

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Solution

The fourth proportional to 667,283.89, 920,918.01 and 380,847.24 is: 525,606.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,283.89 : 920,918.01 = 380,847.24 : x
  2. Step 2: Convert to fraction form
    667,283.89/920,918.01 = 380,847.24/x
  3. Step 3: Cross multiply
    667,283.89x = 920,918.01 × 380,847.24
  4. Step 4: Simplify right side
    667,283.89x = 350,729,077,770.20
  5. Step 5: Solve for x
    x = 350,729,077,770.20/667,283.89
  6. Step 6: Final answer
    x = 525,606.99

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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.