Home / 821,338.06-1,230,288.57-660,544.82

Finding the Fourth Proportional to 821,338.06, 1,230,288.57 and 660,544.82

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Solution

The fourth proportional to 821,338.06, 1,230,288.57 and 660,544.82 is: 989,435.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,338.06 : 1,230,288.57 = 660,544.82 : x
  2. Step 2: Convert to fraction form
    821,338.06/1,230,288.57 = 660,544.82/x
  3. Step 3: Cross multiply
    821,338.06x = 1,230,288.57 × 660,544.82
  4. Step 4: Simplify right side
    821,338.06x = 812,660,745,094.43
  5. Step 5: Solve for x
    x = 812,660,745,094.43/821,338.06
  6. Step 6: Final answer
    x = 989,435.15

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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.