Home / 638,162.87-880,664.94-347,774.54

Finding the Fourth Proportional to 638,162.87, 880,664.94 and 347,774.54

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Solution

The fourth proportional to 638,162.87, 880,664.94 and 347,774.54 is: 479,928.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,162.87 : 880,664.94 = 347,774.54 : x
  2. Step 2: Convert to fraction form
    638,162.87/880,664.94 = 347,774.54/x
  3. Step 3: Cross multiply
    638,162.87x = 880,664.94 × 347,774.54
  4. Step 4: Simplify right side
    638,162.87x = 306,272,839,999.30
  5. Step 5: Solve for x
    x = 306,272,839,999.30/638,162.87
  6. Step 6: Final answer
    x = 479,928.96

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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.