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Finding the Fourth Proportional to 667,250.96, 920,872.19 and 380,813.90

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Solution

The fourth proportional to 667,250.96, 920,872.19 and 380,813.90 is: 525,560.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,250.96 : 920,872.19 = 380,813.90 : x
  2. Step 2: Convert to fraction form
    667,250.96/920,872.19 = 380,813.90/x
  3. Step 3: Cross multiply
    667,250.96x = 920,872.19 × 380,813.90
  4. Step 4: Simplify right side
    667,250.96x = 350,680,923,567.01
  5. Step 5: Solve for x
    x = 350,680,923,567.01/667,250.96
  6. Step 6: Final answer
    x = 525,560.77

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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.