Home / 678,739.66-936,635.07-376,953.10

Finding the Fourth Proportional to 678,739.66, 936,635.07 and 376,953.10

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Solution

The fourth proportional to 678,739.66, 936,635.07 and 376,953.10 is: 520,181.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,739.66 : 936,635.07 = 376,953.10 : x
  2. Step 2: Convert to fraction form
    678,739.66/936,635.07 = 376,953.10/x
  3. Step 3: Cross multiply
    678,739.66x = 936,635.07 × 376,953.10
  4. Step 4: Simplify right side
    678,739.66x = 353,067,493,205.22
  5. Step 5: Solve for x
    x = 353,067,493,205.22/678,739.66
  6. Step 6: Final answer
    x = 520,181.03

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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.