Home / 3,120,142.71-4,680,389.03-876,105.75

Finding the Fourth Proportional to 3,120,142.71, 4,680,389.03 and 876,105.75

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Solution

The fourth proportional to 3,120,142.71, 4,680,389.03 and 876,105.75 is: 1,314,207.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,142.71 : 4,680,389.03 = 876,105.75 : x
  2. Step 2: Convert to fraction form
    3,120,142.71/4,680,389.03 = 876,105.75/x
  3. Step 3: Cross multiply
    3,120,142.71x = 4,680,389.03 × 876,105.75
  4. Step 4: Simplify right side
    3,120,142.71x = 4,100,515,737,039.39
  5. Step 5: Solve for x
    x = 4,100,515,737,039.39/3,120,142.71
  6. Step 6: Final answer
    x = 1,314,207.75

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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.