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Finding the Fourth Proportional to 1,330,571.36, 1,836,516.49 and 757,949.15

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Solution

The fourth proportional to 1,330,571.36, 1,836,516.49 and 757,949.15 is: 1,046,156.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,571.36 : 1,836,516.49 = 757,949.15 : x
  2. Step 2: Convert to fraction form
    1,330,571.36/1,836,516.49 = 757,949.15/x
  3. Step 3: Cross multiply
    1,330,571.36x = 1,836,516.49 × 757,949.15
  4. Step 4: Simplify right side
    1,330,571.36x = 1,391,986,103,373.90
  5. Step 5: Solve for x
    x = 1,391,986,103,373.90/1,330,571.36
  6. Step 6: Final answer
    x = 1,046,156.67

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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.