Home / 1,331,012.20-1,996,518.30-1,317,015.40

Finding the Fourth Proportional to 1,331,012.20, 1,996,518.30 and 1,317,015.40

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Solution

The fourth proportional to 1,331,012.20, 1,996,518.30 and 1,317,015.40 is: 1,975,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,012.20 : 1,996,518.30 = 1,317,015.40 : x
  2. Step 2: Convert to fraction form
    1,331,012.20/1,996,518.30 = 1,317,015.40/x
  3. Step 3: Cross multiply
    1,331,012.20x = 1,996,518.30 × 1,317,015.40
  4. Step 4: Simplify right side
    1,331,012.20x = 2,629,445,347,481.82
  5. Step 5: Solve for x
    x = 2,629,445,347,481.82/1,331,012.20
  6. Step 6: Final answer
    x = 1,975,523.10

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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.