Home / 619,215.31-928,819.32-198,489.97

Finding the Fourth Proportional to 619,215.31, 928,819.32 and 198,489.97

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Solution

The fourth proportional to 619,215.31, 928,819.32 and 198,489.97 is: 297,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,215.31 : 928,819.32 = 198,489.97 : x
  2. Step 2: Convert to fraction form
    619,215.31/928,819.32 = 198,489.97/x
  3. Step 3: Cross multiply
    619,215.31x = 928,819.32 × 198,489.97
  4. Step 4: Simplify right side
    619,215.31x = 184,361,318,962.22
  5. Step 5: Solve for x
    x = 184,361,318,962.22/619,215.31
  6. Step 6: Final answer
    x = 297,733.79

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.