Home / 638,181.05-880,690.01-347,792.72

Finding the Fourth Proportional to 638,181.05, 880,690.01 and 347,792.72

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Solution

The fourth proportional to 638,181.05, 880,690.01 and 347,792.72 is: 479,954.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,181.05 : 880,690.01 = 347,792.72 : x
  2. Step 2: Convert to fraction form
    638,181.05/880,690.01 = 347,792.72/x
  3. Step 3: Cross multiply
    638,181.05x = 880,690.01 × 347,792.72
  4. Step 4: Simplify right side
    638,181.05x = 306,297,567,912.31
  5. Step 5: Solve for x
    x = 306,297,567,912.31/638,181.05
  6. Step 6: Final answer
    x = 479,954.04

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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.