Home / 812,110.79-1,218,166.20-251,145.29

Finding the Fourth Proportional to 812,110.79, 1,218,166.20 and 251,145.29

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Solution

The fourth proportional to 812,110.79, 1,218,166.20 and 251,145.29 is: 376,717.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,110.79 : 1,218,166.20 = 251,145.29 : x
  2. Step 2: Convert to fraction form
    812,110.79/1,218,166.20 = 251,145.29/x
  3. Step 3: Cross multiply
    812,110.79x = 1,218,166.20 × 251,145.29
  4. Step 4: Simplify right side
    812,110.79x = 305,936,706,612.61
  5. Step 5: Solve for x
    x = 305,936,706,612.61/812,110.79
  6. Step 6: Final answer
    x = 376,717.94

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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.