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Finding the Fourth Proportional to 1,788,116.64, 2,665,329.78 and 1,644,627.84

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Solution

The fourth proportional to 1,788,116.64, 2,665,329.78 and 1,644,627.84 is: 2,451,448.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788,116.64 : 2,665,329.78 = 1,644,627.84 : x
  2. Step 2: Convert to fraction form
    1,788,116.64/2,665,329.78 = 1,644,627.84/x
  3. Step 3: Cross multiply
    1,788,116.64x = 2,665,329.78 × 1,644,627.84
  4. Step 4: Simplify right side
    1,788,116.64x = 4,383,475,558,969.08
  5. Step 5: Solve for x
    x = 4,383,475,558,969.08/1,788,116.64
  6. Step 6: Final answer
    x = 2,451,448.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.