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Finding the Fourth Proportional to 638,241.32, 880,812.43 and 351,760.73

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Solution

The fourth proportional to 638,241.32, 880,812.43 and 351,760.73 is: 485,451.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,241.32 : 880,812.43 = 351,760.73 : x
  2. Step 2: Convert to fraction form
    638,241.32/880,812.43 = 351,760.73/x
  3. Step 3: Cross multiply
    638,241.32x = 880,812.43 × 351,760.73
  4. Step 4: Simplify right side
    638,241.32x = 309,835,218,086.41
  5. Step 5: Solve for x
    x = 309,835,218,086.41/638,241.32
  6. Step 6: Final answer
    x = 485,451.52

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Double scale
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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.