Home / 641,584.78-885,428.07-369,647.75

Finding the Fourth Proportional to 641,584.78, 885,428.07 and 369,647.75

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Solution

The fourth proportional to 641,584.78, 885,428.07 and 369,647.75 is: 510,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,584.78 : 885,428.07 = 369,647.75 : x
  2. Step 2: Convert to fraction form
    641,584.78/885,428.07 = 369,647.75/x
  3. Step 3: Cross multiply
    641,584.78x = 885,428.07 × 369,647.75
  4. Step 4: Simplify right side
    641,584.78x = 327,296,493,862.34
  5. Step 5: Solve for x
    x = 327,296,493,862.34/641,584.78
  6. Step 6: Final answer
    x = 510,137.56

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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.