Home / 828,018.90-1,242,028.35-259,404.75

Finding the Fourth Proportional to 828,018.90, 1,242,028.35 and 259,404.75

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Solution

The fourth proportional to 828,018.90, 1,242,028.35 and 259,404.75 is: 389,107.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,018.90 : 1,242,028.35 = 259,404.75 : x
  2. Step 2: Convert to fraction form
    828,018.90/1,242,028.35 = 259,404.75/x
  3. Step 3: Cross multiply
    828,018.90x = 1,242,028.35 × 259,404.75
  4. Step 4: Simplify right side
    828,018.90x = 322,188,053,624.66
  5. Step 5: Solve for x
    x = 322,188,053,624.66/828,018.90
  6. Step 6: Final answer
    x = 389,107.13

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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.