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Finding the Fourth Proportional to 605,608.60, 908,412.90 and 446,978.20

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Solution

The fourth proportional to 605,608.60, 908,412.90 and 446,978.20 is: 670,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,608.60 : 908,412.90 = 446,978.20 : x
  2. Step 2: Convert to fraction form
    605,608.60/908,412.90 = 446,978.20/x
  3. Step 3: Cross multiply
    605,608.60x = 908,412.90 × 446,978.20
  4. Step 4: Simplify right side
    605,608.60x = 406,040,762,898.78
  5. Step 5: Solve for x
    x = 406,040,762,898.78/605,608.60
  6. Step 6: Final answer
    x = 670,467.30

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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.