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Finding the Fourth Proportional to 1,968,620.60, 2,952,930.90 and 1,330,891.40

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Solution

The fourth proportional to 1,968,620.60, 2,952,930.90 and 1,330,891.40 is: 1,996,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968,620.60 : 2,952,930.90 = 1,330,891.40 : x
  2. Step 2: Convert to fraction form
    1,968,620.60/2,952,930.90 = 1,330,891.40/x
  3. Step 3: Cross multiply
    1,968,620.60x = 2,952,930.90 × 1,330,891.40
  4. Step 4: Simplify right side
    1,968,620.60x = 3,930,030,339,604.26
  5. Step 5: Solve for x
    x = 3,930,030,339,604.26/1,968,620.60
  6. Step 6: Final answer
    x = 1,996,337.10

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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.