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Finding the Fourth Proportional to 1,198,807.72, 1,797,994.93 and 345,669.61

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Solution

The fourth proportional to 1,198,807.72, 1,797,994.93 and 345,669.61 is: 518,441.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,807.72 : 1,797,994.93 = 345,669.61 : x
  2. Step 2: Convert to fraction form
    1,198,807.72/1,797,994.93 = 345,669.61/x
  3. Step 3: Cross multiply
    1,198,807.72x = 1,797,994.93 × 345,669.61
  4. Step 4: Simplify right side
    1,198,807.72x = 621,512,204,506.73
  5. Step 5: Solve for x
    x = 621,512,204,506.73/1,198,807.72
  6. Step 6: Final answer
    x = 518,441.94

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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.