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Finding the Fourth Proportional to 490,628.58, 677,086.62 and 275,767.98

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Solution

The fourth proportional to 490,628.58, 677,086.62 and 275,767.98 is: 380,570.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,628.58 : 677,086.62 = 275,767.98 : x
  2. Step 2: Convert to fraction form
    490,628.58/677,086.62 = 275,767.98/x
  3. Step 3: Cross multiply
    490,628.58x = 677,086.62 × 275,767.98
  4. Step 4: Simplify right side
    490,628.58x = 186,718,809,482.43
  5. Step 5: Solve for x
    x = 186,718,809,482.43/490,628.58
  6. Step 6: Final answer
    x = 380,570.59

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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.