Home / 843,612.80-1,265,419.20-274,992.80

Finding the Fourth Proportional to 843,612.80, 1,265,419.20 and 274,992.80

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Solution

The fourth proportional to 843,612.80, 1,265,419.20 and 274,992.80 is: 412,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,612.80 : 1,265,419.20 = 274,992.80 : x
  2. Step 2: Convert to fraction form
    843,612.80/1,265,419.20 = 274,992.80/x
  3. Step 3: Cross multiply
    843,612.80x = 1,265,419.20 × 274,992.80
  4. Step 4: Simplify right side
    843,612.80x = 347,981,168,981.76
  5. Step 5: Solve for x
    x = 347,981,168,981.76/843,612.80
  6. Step 6: Final answer
    x = 412,489.20

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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.