Home / 491,379,240.93-678,120,086.89-290,608,219.95

Finding the Fourth Proportional to 491,379,240.93, 678,120,086.89 and 290,608,219.95

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Solution

The fourth proportional to 491,379,240.93, 678,120,086.89 and 290,608,219.95 is: 401,049,240.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,379,240.93 : 678,120,086.89 = 290,608,219.95 : x
  2. Step 2: Convert to fraction form
    491,379,240.93/678,120,086.89 = 290,608,219.95/x
  3. Step 3: Cross multiply
    491,379,240.93x = 678,120,086.89 × 290,608,219.95
  4. Step 4: Simplify right side
    491,379,240.93x = 197,067,271,361,547,392
  5. Step 5: Solve for x
    x = 197,067,271,361,547,392/491,379,240.93
  6. Step 6: Final answer
    x = 401,049,240.48

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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.