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Finding the Fourth Proportional to 259,780,632,921.20, 389,670,949,381.80 and 259,780,632,921.20

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Solution

The fourth proportional to 259,780,632,921.20, 389,670,949,381.80 and 259,780,632,921.20 is: 389,670,949,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,780,632,921.20 : 389,670,949,381.80 = 259,780,632,921.20 : x
  2. Step 2: Convert to fraction form
    259,780,632,921.20/389,670,949,381.80 = 259,780,632,921.20/x
  3. Step 3: Cross multiply
    259,780,632,921.20x = 389,670,949,381.80 × 259,780,632,921.20
  4. Step 4: Simplify right side
    259,780,632,921.20x = 101,228,965,861,408,901,169,152
  5. Step 5: Solve for x
    x = 101,228,965,861,408,901,169,152/259,780,632,921.20
  6. Step 6: Final answer
    x = 389,670,949,381.80

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Double scale
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1.5x scale

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.