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Finding the Fourth Proportional to 666,760.30, 920,132.15 and 360,836.73

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Solution

The fourth proportional to 666,760.30, 920,132.15 and 360,836.73 is: 497,956.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,760.30 : 920,132.15 = 360,836.73 : x
  2. Step 2: Convert to fraction form
    666,760.30/920,132.15 = 360,836.73/x
  3. Step 3: Cross multiply
    666,760.30x = 920,132.15 × 360,836.73
  4. Step 4: Simplify right side
    666,760.30x = 332,017,469,769.03
  5. Step 5: Solve for x
    x = 332,017,469,769.03/666,760.30
  6. Step 6: Final answer
    x = 497,956.27

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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.