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Finding the Fourth Proportional to 605,216.80, 908,481.30 and 380,830.60

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Solution

The fourth proportional to 605,216.80, 908,481.30 and 380,830.60 is: 571,658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,216.80 : 908,481.30 = 380,830.60 : x
  2. Step 2: Convert to fraction form
    605,216.80/908,481.30 = 380,830.60/x
  3. Step 3: Cross multiply
    605,216.80x = 908,481.30 × 380,830.60
  4. Step 4: Simplify right side
    605,216.80x = 345,977,478,567.78
  5. Step 5: Solve for x
    x = 345,977,478,567.78/605,216.80
  6. Step 6: Final answer
    x = 571,658.75

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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.