Home / 1,433,682.72-1,978,255.42-821,717.60

Finding the Fourth Proportional to 1,433,682.72, 1,978,255.42 and 821,717.60

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Solution

The fourth proportional to 1,433,682.72, 1,978,255.42 and 821,717.60 is: 1,133,840.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,682.72 : 1,978,255.42 = 821,717.60 : x
  2. Step 2: Convert to fraction form
    1,433,682.72/1,978,255.42 = 821,717.60/x
  3. Step 3: Cross multiply
    1,433,682.72x = 1,978,255.42 × 821,717.60
  4. Step 4: Simplify right side
    1,433,682.72x = 1,625,567,283,963.82
  5. Step 5: Solve for x
    x = 1,625,567,283,963.82/1,433,682.72
  6. Step 6: Final answer
    x = 1,133,840.33

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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.