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Finding the Fourth Proportional to 667,191.15, 920,724.14 and 361,267.67

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Solution

The fourth proportional to 667,191.15, 920,724.14 and 361,267.67 is: 498,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,191.15 : 920,724.14 = 361,267.67 : x
  2. Step 2: Convert to fraction form
    667,191.15/920,724.14 = 361,267.67/x
  3. Step 3: Cross multiply
    667,191.15x = 920,724.14 × 361,267.67
  4. Step 4: Simplify right side
    667,191.15x = 332,627,867,975.53
  5. Step 5: Solve for x
    x = 332,627,867,975.53/667,191.15
  6. Step 6: Final answer
    x = 498,549.58

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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.