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Finding the Fourth Proportional to 978,382.60, 1,467,719.72 and 347,243.56

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Solution

The fourth proportional to 978,382.60, 1,467,719.72 and 347,243.56 is: 520,917.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,382.60 : 1,467,719.72 = 347,243.56 : x
  2. Step 2: Convert to fraction form
    978,382.60/1,467,719.72 = 347,243.56/x
  3. Step 3: Cross multiply
    978,382.60x = 1,467,719.72 × 347,243.56
  4. Step 4: Simplify right side
    978,382.60x = 509,656,220,655.00
  5. Step 5: Solve for x
    x = 509,656,220,655.00/978,382.60
  6. Step 6: Final answer
    x = 520,917.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.