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Finding the Fourth Proportional to 1,993,910.40, 2,986,718.40 and 1,662,134.40

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Solution

The fourth proportional to 1,993,910.40, 2,986,718.40 and 1,662,134.40 is: 2,489,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,910.40 : 2,986,718.40 = 1,662,134.40 : x
  2. Step 2: Convert to fraction form
    1,993,910.40/2,986,718.40 = 1,662,134.40/x
  3. Step 3: Cross multiply
    1,993,910.40x = 2,986,718.40 × 1,662,134.40
  4. Step 4: Simplify right side
    1,993,910.40x = 4,964,327,395,752.96
  5. Step 5: Solve for x
    x = 4,964,327,395,752.96/1,993,910.40
  6. Step 6: Final answer
    x = 2,489,744.47

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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.