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Finding the Fourth Proportional to 1,836,561.60, 2,754,842.40 and 1,328,740.20

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Solution

The fourth proportional to 1,836,561.60, 2,754,842.40 and 1,328,740.20 is: 1,993,110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836,561.60 : 2,754,842.40 = 1,328,740.20 : x
  2. Step 2: Convert to fraction form
    1,836,561.60/2,754,842.40 = 1,328,740.20/x
  3. Step 3: Cross multiply
    1,836,561.60x = 2,754,842.40 × 1,328,740.20
  4. Step 4: Simplify right side
    1,836,561.60x = 3,660,469,841,544.48
  5. Step 5: Solve for x
    x = 3,660,469,841,544.48/1,836,561.60
  6. Step 6: Final answer
    x = 1,993,110.30

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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.