Home / 821,036.40-1,231,554.60-691,128.60

Finding the Fourth Proportional to 821,036.40, 1,231,554.60 and 691,128.60

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Solution

The fourth proportional to 821,036.40, 1,231,554.60 and 691,128.60 is: 1,036,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,036.40 : 1,231,554.60 = 691,128.60 : x
  2. Step 2: Convert to fraction form
    821,036.40/1,231,554.60 = 691,128.60/x
  3. Step 3: Cross multiply
    821,036.40x = 1,231,554.60 × 691,128.60
  4. Step 4: Simplify right side
    821,036.40x = 851,162,606,521.56
  5. Step 5: Solve for x
    x = 851,162,606,521.56/821,036.40
  6. Step 6: Final answer
    x = 1,036,692.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.