Home / 685,286.70-1,027,970.40-264,564.78

Finding the Fourth Proportional to 685,286.70, 1,027,970.40 and 264,564.78

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Solution

The fourth proportional to 685,286.70, 1,027,970.40 and 264,564.78 is: 396,862.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,286.70 : 1,027,970.40 = 264,564.78 : x
  2. Step 2: Convert to fraction form
    685,286.70/1,027,970.40 = 264,564.78/x
  3. Step 3: Cross multiply
    685,286.70x = 1,027,970.40 × 264,564.78
  4. Step 4: Simplify right side
    685,286.70x = 271,964,762,722.51
  5. Step 5: Solve for x
    x = 271,964,762,722.51/685,286.70
  6. Step 6: Final answer
    x = 396,862.75

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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.