Home / 880,717.78-1,321,076.70-215,869.78

Finding the Fourth Proportional to 880,717.78, 1,321,076.70 and 215,869.78

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Solution

The fourth proportional to 880,717.78, 1,321,076.70 and 215,869.78 is: 323,804.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,717.78 : 1,321,076.70 = 215,869.78 : x
  2. Step 2: Convert to fraction form
    880,717.78/1,321,076.70 = 215,869.78/x
  3. Step 3: Cross multiply
    880,717.78x = 1,321,076.70 × 215,869.78
  4. Step 4: Simplify right side
    880,717.78x = 285,180,536,592.13
  5. Step 5: Solve for x
    x = 285,180,536,592.13/880,717.78
  6. Step 6: Final answer
    x = 323,804.68

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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.