Home / 879,010.09-1,325,103.42-820,419.85

Finding the Fourth Proportional to 879,010.09, 1,325,103.42 and 820,419.85

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Solution

The fourth proportional to 879,010.09, 1,325,103.42 and 820,419.85 is: 1,236,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,010.09 : 1,325,103.42 = 820,419.85 : x
  2. Step 2: Convert to fraction form
    879,010.09/1,325,103.42 = 820,419.85/x
  3. Step 3: Cross multiply
    879,010.09x = 1,325,103.42 × 820,419.85
  4. Step 4: Simplify right side
    879,010.09x = 1,087,141,144,968.79
  5. Step 5: Solve for x
    x = 1,087,141,144,968.79/879,010.09
  6. Step 6: Final answer
    x = 1,236,778.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.