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Finding the Fourth Proportional to 1,786,402.80, 2,679,604.20 and 1,618,441.20

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Solution

The fourth proportional to 1,786,402.80, 2,679,604.20 and 1,618,441.20 is: 2,427,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,402.80 : 2,679,604.20 = 1,618,441.20 : x
  2. Step 2: Convert to fraction form
    1,786,402.80/2,679,604.20 = 1,618,441.20/x
  3. Step 3: Cross multiply
    1,786,402.80x = 2,679,604.20 × 1,618,441.20
  4. Step 4: Simplify right side
    1,786,402.80x = 4,336,781,836,973.04
  5. Step 5: Solve for x
    x = 4,336,781,836,973.04/1,786,402.80
  6. Step 6: Final answer
    x = 2,427,661.80

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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.