Home / 871,383.90-1,307,297.60-511,858.79

Finding the Fourth Proportional to 871,383.90, 1,307,297.60 and 511,858.79

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Solution

The fourth proportional to 871,383.90, 1,307,297.60 and 511,858.79 is: 767,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,383.90 : 1,307,297.60 = 511,858.79 : x
  2. Step 2: Convert to fraction form
    871,383.90/1,307,297.60 = 511,858.79/x
  3. Step 3: Cross multiply
    871,383.90x = 1,307,297.60 × 511,858.79
  4. Step 4: Simplify right side
    871,383.90x = 669,151,758,610.12
  5. Step 5: Solve for x
    x = 669,151,758,610.12/871,383.90
  6. Step 6: Final answer
    x = 767,918.43

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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.