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Finding the Fourth Proportional to 680,993.58, 939,777.66 and 375,076.89

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Solution

The fourth proportional to 680,993.58, 939,777.66 and 375,076.89 is: 517,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,993.58 : 939,777.66 = 375,076.89 : x
  2. Step 2: Convert to fraction form
    680,993.58/939,777.66 = 375,076.89/x
  3. Step 3: Cross multiply
    680,993.58x = 939,777.66 × 375,076.89
  4. Step 4: Simplify right side
    680,993.58x = 352,488,882,004.28
  5. Step 5: Solve for x
    x = 352,488,882,004.28/680,993.58
  6. Step 6: Final answer
    x = 517,609.70

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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.