Home / 1,215,863.76-1,678,096.08-823,218.60

Finding the Fourth Proportional to 1,215,863.76, 1,678,096.08 and 823,218.60

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Solution

The fourth proportional to 1,215,863.76, 1,678,096.08 and 823,218.60 is: 1,136,179.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,863.76 : 1,678,096.08 = 823,218.60 : x
  2. Step 2: Convert to fraction form
    1,215,863.76/1,678,096.08 = 823,218.60/x
  3. Step 3: Cross multiply
    1,215,863.76x = 1,678,096.08 × 823,218.60
  4. Step 4: Simplify right side
    1,215,863.76x = 1,381,439,905,643.09
  5. Step 5: Solve for x
    x = 1,381,439,905,643.09/1,215,863.76
  6. Step 6: Final answer
    x = 1,136,179.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.