Home / 1,233,394.02-1,701,584.82-820,128.78

Finding the Fourth Proportional to 1,233,394.02, 1,701,584.82 and 820,128.78

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Solution

The fourth proportional to 1,233,394.02, 1,701,584.82 and 820,128.78 is: 1,131,445.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233,394.02 : 1,701,584.82 = 820,128.78 : x
  2. Step 2: Convert to fraction form
    1,233,394.02/1,701,584.82 = 820,128.78/x
  3. Step 3: Cross multiply
    1,233,394.02x = 1,701,584.82 × 820,128.78
  4. Step 4: Simplify right side
    1,233,394.02x = 1,395,518,682,493.12
  5. Step 5: Solve for x
    x = 1,395,518,682,493.12/1,233,394.02
  6. Step 6: Final answer
    x = 1,131,445.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.