Home / 828,142.63-1,242,214.09-259,523.54

Finding the Fourth Proportional to 828,142.63, 1,242,214.09 and 259,523.54

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Solution

The fourth proportional to 828,142.63, 1,242,214.09 and 259,523.54 is: 389,285.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,142.63 : 1,242,214.09 = 259,523.54 : x
  2. Step 2: Convert to fraction form
    828,142.63/1,242,214.09 = 259,523.54/x
  3. Step 3: Cross multiply
    828,142.63x = 1,242,214.09 × 259,523.54
  4. Step 4: Simplify right side
    828,142.63x = 322,383,798,074.68
  5. Step 5: Solve for x
    x = 322,383,798,074.68/828,142.63
  6. Step 6: Final answer
    x = 389,285.36

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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.