Home / 2,661,336.20-3,992,004.30-768,139.40

Finding the Fourth Proportional to 2,661,336.20, 3,992,004.30 and 768,139.40

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Solution

The fourth proportional to 2,661,336.20, 3,992,004.30 and 768,139.40 is: 1,152,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,336.20 : 3,992,004.30 = 768,139.40 : x
  2. Step 2: Convert to fraction form
    2,661,336.20/3,992,004.30 = 768,139.40/x
  3. Step 3: Cross multiply
    2,661,336.20x = 3,992,004.30 × 768,139.40
  4. Step 4: Simplify right side
    2,661,336.20x = 3,066,415,787,799.42
  5. Step 5: Solve for x
    x = 3,066,415,787,799.42/2,661,336.20
  6. Step 6: Final answer
    x = 1,152,209.10

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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.