Home / 638,185.05-880,695.38-351,705.13

Finding the Fourth Proportional to 638,185.05, 880,695.38 and 351,705.13

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Solution

The fourth proportional to 638,185.05, 880,695.38 and 351,705.13 is: 485,353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,185.05 : 880,695.38 = 351,705.13 : x
  2. Step 2: Convert to fraction form
    638,185.05/880,695.38 = 351,705.13/x
  3. Step 3: Cross multiply
    638,185.05x = 880,695.38 × 351,705.13
  4. Step 4: Simplify right side
    638,185.05x = 309,745,083,113.30
  5. Step 5: Solve for x
    x = 309,745,083,113.30/638,185.05
  6. Step 6: Final answer
    x = 485,353.09

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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.