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Finding the Fourth Proportional to 490,497.48, 676,880.43 and 275,673.96

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Solution

The fourth proportional to 490,497.48, 676,880.43 and 275,673.96 is: 380,426.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,497.48 : 676,880.43 = 275,673.96 : x
  2. Step 2: Convert to fraction form
    490,497.48/676,880.43 = 275,673.96/x
  3. Step 3: Cross multiply
    490,497.48x = 676,880.43 × 275,673.96
  4. Step 4: Simplify right side
    490,497.48x = 186,598,308,584.60
  5. Step 5: Solve for x
    x = 186,598,308,584.60/490,497.48
  6. Step 6: Final answer
    x = 380,426.64

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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.