Home / 638,241.11-880,770.07-351,760.51

Finding the Fourth Proportional to 638,241.11, 880,770.07 and 351,760.51

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Solution

The fourth proportional to 638,241.11, 880,770.07 and 351,760.51 is: 485,428.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,241.11 : 880,770.07 = 351,760.51 : x
  2. Step 2: Convert to fraction form
    638,241.11/880,770.07 = 351,760.51/x
  3. Step 3: Cross multiply
    638,241.11x = 880,770.07 × 351,760.51
  4. Step 4: Simplify right side
    638,241.11x = 309,820,129,015.94
  5. Step 5: Solve for x
    x = 309,820,129,015.94/638,241.11
  6. Step 6: Final answer
    x = 485,428.04

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Double scale
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Similar ratio
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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.