Home / 871,383.40-1,307,296.85-511,858.28

Finding the Fourth Proportional to 871,383.40, 1,307,296.85 and 511,858.28

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Solution

The fourth proportional to 871,383.40, 1,307,296.85 and 511,858.28 is: 767,917.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,383.40 : 1,307,296.85 = 511,858.28 : x
  2. Step 2: Convert to fraction form
    871,383.40/1,307,296.85 = 511,858.28/x
  3. Step 3: Cross multiply
    871,383.40x = 1,307,296.85 × 511,858.28
  4. Step 4: Simplify right side
    871,383.40x = 669,150,717,799.37
  5. Step 5: Solve for x
    x = 669,150,717,799.37/871,383.40
  6. Step 6: Final answer
    x = 767,917.68

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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.