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Finding the Fourth Proportional to 680,067.36, 938,492.94 and 374,137.16

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Solution

The fourth proportional to 680,067.36, 938,492.94 and 374,137.16 is: 516,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,067.36 : 938,492.94 = 374,137.16 : x
  2. Step 2: Convert to fraction form
    680,067.36/938,492.94 = 374,137.16/x
  3. Step 3: Cross multiply
    680,067.36x = 938,492.94 × 374,137.16
  4. Step 4: Simplify right side
    680,067.36x = 351,125,085,597.88
  5. Step 5: Solve for x
    x = 351,125,085,597.88/680,067.36
  6. Step 6: Final answer
    x = 516,309.28

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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.