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Finding the Fourth Proportional to 2,652,458.92, 3,978,715.74 and 2,123,343.88

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Solution

The fourth proportional to 2,652,458.92, 3,978,715.74 and 2,123,343.88 is: 3,185,037.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652,458.92 : 3,978,715.74 = 2,123,343.88 : x
  2. Step 2: Convert to fraction form
    2,652,458.92/3,978,715.74 = 2,123,343.88/x
  3. Step 3: Cross multiply
    2,652,458.92x = 3,978,715.74 × 2,123,343.88
  4. Step 4: Simplify right side
    2,652,458.92x = 8,448,181,716,788.67
  5. Step 5: Solve for x
    x = 8,448,181,716,788.67/2,652,458.92
  6. Step 6: Final answer
    x = 3,185,037.72

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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.