Home / 1,311,933,100.20-1,968,396,667.92-787,668,317.88

Finding the Fourth Proportional to 1,311,933,100.20, 1,968,396,667.92 and 787,668,317.88

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Solution

The fourth proportional to 1,311,933,100.20, 1,968,396,667.92 and 787,668,317.88 is: 1,181,800,880.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,933,100.20 : 1,968,396,667.92 = 787,668,317.88 : x
  2. Step 2: Convert to fraction form
    1,311,933,100.20/1,968,396,667.92 = 787,668,317.88/x
  3. Step 3: Cross multiply
    1,311,933,100.20x = 1,968,396,667.92 × 787,668,317.88
  4. Step 4: Simplify right side
    1,311,933,100.20x = 1,550,443,692,341,143,296
  5. Step 5: Solve for x
    x = 1,550,443,692,341,143,296/1,311,933,100.20
  6. Step 6: Final answer
    x = 1,181,800,880.02

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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.