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Finding the Fourth Proportional to 667,194.96, 920,500.56 and 380,508.96

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Solution

The fourth proportional to 667,194.96, 920,500.56 and 380,508.96 is: 524,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,194.96 : 920,500.56 = 380,508.96 : x
  2. Step 2: Convert to fraction form
    667,194.96/920,500.56 = 380,508.96/x
  3. Step 3: Cross multiply
    667,194.96x = 920,500.56 × 380,508.96
  4. Step 4: Simplify right side
    667,194.96x = 350,258,710,765.02
  5. Step 5: Solve for x
    x = 350,258,710,765.02/667,194.96
  6. Step 6: Final answer
    x = 524,972.06

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1.5x scale

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.