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Finding the Fourth Proportional to 667,280.30, 920,842.25 and 361,349.69

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Solution

The fourth proportional to 667,280.30, 920,842.25 and 361,349.69 is: 498,660.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,280.30 : 920,842.25 = 361,349.69 : x
  2. Step 2: Convert to fraction form
    667,280.30/920,842.25 = 361,349.69/x
  3. Step 3: Cross multiply
    667,280.30x = 920,842.25 × 361,349.69
  4. Step 4: Simplify right side
    667,280.30x = 332,746,055,165.44
  5. Step 5: Solve for x
    x = 332,746,055,165.44/667,280.30
  6. Step 6: Final answer
    x = 498,660.09

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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.