Home / 491,379,241.44-678,120,087.58-290,608,220.45

Finding the Fourth Proportional to 491,379,241.44, 678,120,087.58 and 290,608,220.45

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Solution

The fourth proportional to 491,379,241.44, 678,120,087.58 and 290,608,220.45 is: 401,049,241.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,379,241.44 : 678,120,087.58 = 290,608,220.45 : x
  2. Step 2: Convert to fraction form
    491,379,241.44/678,120,087.58 = 290,608,220.45/x
  3. Step 3: Cross multiply
    491,379,241.44x = 678,120,087.58 × 290,608,220.45
  4. Step 4: Simplify right side
    491,379,241.44x = 197,067,271,899,631,360
  5. Step 5: Solve for x
    x = 197,067,271,899,631,360/491,379,241.44
  6. Step 6: Final answer
    x = 401,049,241.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.