Home / 407,921,961.90-611,882,184.69-127,824,324.78

Finding the Fourth Proportional to 407,921,961.90, 611,882,184.69 and 127,824,324.78

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Solution

The fourth proportional to 407,921,961.90, 611,882,184.69 and 127,824,324.78 is: 191,736,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,921,961.90 : 611,882,184.69 = 127,824,324.78 : x
  2. Step 2: Convert to fraction form
    407,921,961.90/611,882,184.69 = 127,824,324.78/x
  3. Step 3: Cross multiply
    407,921,961.90x = 611,882,184.69 × 127,824,324.78
  4. Step 4: Simplify right side
    407,921,961.90x = 78,213,427,102,910,512
  5. Step 5: Solve for x
    x = 78,213,427,102,910,512/407,921,961.90
  6. Step 6: Final answer
    x = 191,736,249.60

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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.