Home / 1,381,949.28-1,906,074.86-915,960.40

Finding the Fourth Proportional to 1,381,949.28, 1,906,074.86 and 915,960.40

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Solution

The fourth proportional to 1,381,949.28, 1,906,074.86 and 915,960.40 is: 1,263,352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,949.28 : 1,906,074.86 = 915,960.40 : x
  2. Step 2: Convert to fraction form
    1,381,949.28/1,906,074.86 = 915,960.40/x
  3. Step 3: Cross multiply
    1,381,949.28x = 1,906,074.86 × 915,960.40
  4. Step 4: Simplify right side
    1,381,949.28x = 1,745,889,091,195.54
  5. Step 5: Solve for x
    x = 1,745,889,091,195.54/1,381,949.28
  6. Step 6: Final answer
    x = 1,263,352.51

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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.