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Finding the Fourth Proportional to 667,091.91, 920,580.07 and 361,160.18

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Solution

The fourth proportional to 667,091.91, 920,580.07 and 361,160.18 is: 498,397.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,091.91 : 920,580.07 = 361,160.18 : x
  2. Step 2: Convert to fraction form
    667,091.91/920,580.07 = 361,160.18/x
  3. Step 3: Cross multiply
    667,091.91x = 920,580.07 × 361,160.18
  4. Step 4: Simplify right side
    667,091.91x = 332,476,857,376.91
  5. Step 5: Solve for x
    x = 332,476,857,376.91/667,091.91
  6. Step 6: Final answer
    x = 498,397.38

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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.