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Finding the Fourth Proportional to 680,994.21, 939,760.41 and 375,099.24

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Solution

The fourth proportional to 680,994.21, 939,760.41 and 375,099.24 is: 517,630.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,994.21 : 939,760.41 = 375,099.24 : x
  2. Step 2: Convert to fraction form
    680,994.21/939,760.41 = 375,099.24/x
  3. Step 3: Cross multiply
    680,994.21x = 939,760.41 × 375,099.24
  4. Step 4: Simplify right side
    680,994.21x = 352,503,415,573.09
  5. Step 5: Solve for x
    x = 352,503,415,573.09/680,994.21
  6. Step 6: Final answer
    x = 517,630.56

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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.