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Finding the Fourth Proportional to 490,715.56, 677,141.70 and 275,836.84

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Solution

The fourth proportional to 490,715.56, 677,141.70 and 275,836.84 is: 380,629.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,715.56 : 677,141.70 = 275,836.84 : x
  2. Step 2: Convert to fraction form
    490,715.56/677,141.70 = 275,836.84/x
  3. Step 3: Cross multiply
    490,715.56x = 677,141.70 × 275,836.84
  4. Step 4: Simplify right side
    490,715.56x = 186,780,626,760.23
  5. Step 5: Solve for x
    x = 186,780,626,760.23/490,715.56
  6. Step 6: Final answer
    x = 380,629.11

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1.5x scale

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.