Home / 685,757.09-1,028,137.40-286,512.04

Finding the Fourth Proportional to 685,757.09, 1,028,137.40 and 286,512.04

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Solution

The fourth proportional to 685,757.09, 1,028,137.40 and 286,512.04 is: 429,559.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,757.09 : 1,028,137.40 = 286,512.04 : x
  2. Step 2: Convert to fraction form
    685,757.09/1,028,137.40 = 286,512.04/x
  3. Step 3: Cross multiply
    685,757.09x = 1,028,137.40 × 286,512.04
  4. Step 4: Simplify right side
    685,757.09x = 294,573,740,629.69
  5. Step 5: Solve for x
    x = 294,573,740,629.69/685,757.09
  6. Step 6: Final answer
    x = 429,559.89

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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.