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Finding the Fourth Proportional to 392,899.77, 585,645.77 and 372,954.33

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Solution

The fourth proportional to 392,899.77, 585,645.77 and 372,954.33 is: 555,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,899.77 : 585,645.77 = 372,954.33 : x
  2. Step 2: Convert to fraction form
    392,899.77/585,645.77 = 372,954.33/x
  3. Step 3: Cross multiply
    392,899.77x = 585,645.77 × 372,954.33
  4. Step 4: Simplify right side
    392,899.77x = 218,419,126,700.07
  5. Step 5: Solve for x
    x = 218,419,126,700.07/392,899.77
  6. Step 6: Final answer
    x = 555,915.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.