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Finding the Fourth Proportional to 490,435.32, 676,812.60 and 275,562.57

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Solution

The fourth proportional to 490,435.32, 676,812.60 and 275,562.57 is: 380,283.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,435.32 : 676,812.60 = 275,562.57 : x
  2. Step 2: Convert to fraction form
    490,435.32/676,812.60 = 275,562.57/x
  3. Step 3: Cross multiply
    490,435.32x = 676,812.60 × 275,562.57
  4. Step 4: Simplify right side
    490,435.32x = 186,504,219,464.38
  5. Step 5: Solve for x
    x = 186,504,219,464.38/490,435.32
  6. Step 6: Final answer
    x = 380,283.01

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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.