Home / 685,735.07-1,028,670.26-236,396.78

Finding the Fourth Proportional to 685,735.07, 1,028,670.26 and 236,396.78

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Solution

The fourth proportional to 685,735.07, 1,028,670.26 and 236,396.78 is: 354,618.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,735.07 : 1,028,670.26 = 236,396.78 : x
  2. Step 2: Convert to fraction form
    685,735.07/1,028,670.26 = 236,396.78/x
  3. Step 3: Cross multiply
    685,735.07x = 1,028,670.26 × 236,396.78
  4. Step 4: Simplify right side
    685,735.07x = 243,174,334,677.94
  5. Step 5: Solve for x
    x = 243,174,334,677.94/685,735.07
  6. Step 6: Final answer
    x = 354,618.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.