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Finding the Fourth Proportional to 1,839,137.64, 2,756,917.26 and 879,343.80

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Solution

The fourth proportional to 1,839,137.64, 2,756,917.26 and 879,343.80 is: 1,318,160.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839,137.64 : 2,756,917.26 = 879,343.80 : x
  2. Step 2: Convert to fraction form
    1,839,137.64/2,756,917.26 = 879,343.80/x
  3. Step 3: Cross multiply
    1,839,137.64x = 2,756,917.26 × 879,343.80
  4. Step 4: Simplify right side
    1,839,137.64x = 2,424,278,099,693.99
  5. Step 5: Solve for x
    x = 2,424,278,099,693.99/1,839,137.64
  6. Step 6: Final answer
    x = 1,318,160.23

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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.