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Finding the Fourth Proportional to 667,211.12, 920,817.08 and 380,774.32

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Solution

The fourth proportional to 667,211.12, 920,817.08 and 380,774.32 is: 525,506.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,211.12 : 920,817.08 = 380,774.32 : x
  2. Step 2: Convert to fraction form
    667,211.12/920,817.08 = 380,774.32/x
  3. Step 3: Cross multiply
    667,211.12x = 920,817.08 × 380,774.32
  4. Step 4: Simplify right side
    667,211.12x = 350,623,497,481.39
  5. Step 5: Solve for x
    x = 350,623,497,481.39/667,211.12
  6. Step 6: Final answer
    x = 525,506.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.