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Finding the Fourth Proportional to 1,996,917.60, 2,995,813.80 and 798,538.80

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Solution

The fourth proportional to 1,996,917.60, 2,995,813.80 and 798,538.80 is: 1,197,983.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996,917.60 : 2,995,813.80 = 798,538.80 : x
  2. Step 2: Convert to fraction form
    1,996,917.60/2,995,813.80 = 798,538.80/x
  3. Step 3: Cross multiply
    1,996,917.60x = 2,995,813.80 × 798,538.80
  4. Step 4: Simplify right side
    1,996,917.60x = 2,392,273,556,875.44
  5. Step 5: Solve for x
    x = 2,392,273,556,875.44/1,996,917.60
  6. Step 6: Final answer
    x = 1,197,983.11

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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.