Home / 1,284,772.78-1,772,912.37-711,778.78

Finding the Fourth Proportional to 1,284,772.78, 1,772,912.37 and 711,778.78

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Solution

The fourth proportional to 1,284,772.78, 1,772,912.37 and 711,778.78 is: 982,213.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,772.78 : 1,772,912.37 = 711,778.78 : x
  2. Step 2: Convert to fraction form
    1,284,772.78/1,772,912.37 = 711,778.78/x
  3. Step 3: Cross multiply
    1,284,772.78x = 1,772,912.37 × 711,778.78
  4. Step 4: Simplify right side
    1,284,772.78x = 1,261,921,403,765.51
  5. Step 5: Solve for x
    x = 1,261,921,403,765.51/1,284,772.78
  6. Step 6: Final answer
    x = 982,213.68

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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.