Home / 691,308.24-1,040,696.88-621,788.82

Finding the Fourth Proportional to 691,308.24, 1,040,696.88 and 621,788.82

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Solution

The fourth proportional to 691,308.24, 1,040,696.88 and 621,788.82 is: 936,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,308.24 : 1,040,696.88 = 621,788.82 : x
  2. Step 2: Convert to fraction form
    691,308.24/1,040,696.88 = 621,788.82/x
  3. Step 3: Cross multiply
    691,308.24x = 1,040,696.88 × 621,788.82
  4. Step 4: Simplify right side
    691,308.24x = 647,093,684,992.88
  5. Step 5: Solve for x
    x = 647,093,684,992.88/691,308.24
  6. Step 6: Final answer
    x = 936,042.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.