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Finding the Fourth Proportional to 1,609,788.80, 2,414,974.80 and 809,055.20

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Solution

The fourth proportional to 1,609,788.80, 2,414,974.80 and 809,055.20 is: 1,213,729.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609,788.80 : 2,414,974.80 = 809,055.20 : x
  2. Step 2: Convert to fraction form
    1,609,788.80/2,414,974.80 = 809,055.20/x
  3. Step 3: Cross multiply
    1,609,788.80x = 2,414,974.80 × 809,055.20
  4. Step 4: Simplify right side
    1,609,788.80x = 1,953,847,919,808.96
  5. Step 5: Solve for x
    x = 1,953,847,919,808.96/1,609,788.80
  6. Step 6: Final answer
    x = 1,213,729.35

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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.