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Finding the Fourth Proportional to 662,885.33, 993,556.77 and 378,775.05

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Solution

The fourth proportional to 662,885.33, 993,556.77 and 378,775.05 is: 567,721.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,885.33 : 993,556.77 = 378,775.05 : x
  2. Step 2: Convert to fraction form
    662,885.33/993,556.77 = 378,775.05/x
  3. Step 3: Cross multiply
    662,885.33x = 993,556.77 × 378,775.05
  4. Step 4: Simplify right side
    662,885.33x = 376,334,510,266.81
  5. Step 5: Solve for x
    x = 376,334,510,266.81/662,885.33
  6. Step 6: Final answer
    x = 567,721.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.