Home / 812,760.75-1,219,141.13-221,784.75

Finding the Fourth Proportional to 812,760.75, 1,219,141.13 and 221,784.75

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Solution

The fourth proportional to 812,760.75, 1,219,141.13 and 221,784.75 is: 332,677.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,760.75 : 1,219,141.13 = 221,784.75 : x
  2. Step 2: Convert to fraction form
    812,760.75/1,219,141.13 = 221,784.75/x
  3. Step 3: Cross multiply
    812,760.75x = 1,219,141.13 × 221,784.75
  4. Step 4: Simplify right side
    812,760.75x = 270,386,909,622.84
  5. Step 5: Solve for x
    x = 270,386,909,622.84/812,760.75
  6. Step 6: Final answer
    x = 332,677.13

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Half scale
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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.