Home / 638,059.10-880,560.78-351,579.11

Finding the Fourth Proportional to 638,059.10, 880,560.78 and 351,579.11

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Solution

The fourth proportional to 638,059.10, 880,560.78 and 351,579.11 is: 485,200.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,059.10 : 880,560.78 = 351,579.11 : x
  2. Step 2: Convert to fraction form
    638,059.10/880,560.78 = 351,579.11/x
  3. Step 3: Cross multiply
    638,059.10x = 880,560.78 × 351,579.11
  4. Step 4: Simplify right side
    638,059.10x = 309,586,775,333.31
  5. Step 5: Solve for x
    x = 309,586,775,333.31/638,059.10
  6. Step 6: Final answer
    x = 485,200.78

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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.