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Finding the Fourth Proportional to 638,144.54, 880,628.12 and 347,758.70

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Solution

The fourth proportional to 638,144.54, 880,628.12 and 347,758.70 is: 479,900.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,144.54 : 880,628.12 = 347,758.70 : x
  2. Step 2: Convert to fraction form
    638,144.54/880,628.12 = 347,758.70/x
  3. Step 3: Cross multiply
    638,144.54x = 880,628.12 × 347,758.70
  4. Step 4: Simplify right side
    638,144.54x = 306,246,090,194.64
  5. Step 5: Solve for x
    x = 306,246,090,194.64/638,144.54
  6. Step 6: Final answer
    x = 479,900.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.