Home / 431,738,992.82-647,653,849.23-140,628,811.70

Finding the Fourth Proportional to 431,738,992.82, 647,653,849.23 and 140,628,811.70

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Solution

The fourth proportional to 431,738,992.82, 647,653,849.23 and 140,628,811.70 is: 210,957,992.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,738,992.82 : 647,653,849.23 = 140,628,811.70 : x
  2. Step 2: Convert to fraction form
    431,738,992.82/647,653,849.23 = 140,628,811.70/x
  3. Step 3: Cross multiply
    431,738,992.82x = 647,653,849.23 × 140,628,811.70
  4. Step 4: Simplify right side
    431,738,992.82x = 91,078,791,210,145,856
  5. Step 5: Solve for x
    x = 91,078,791,210,145,856/431,738,992.82
  6. Step 6: Final answer
    x = 210,957,992.50

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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.