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Finding the Fourth Proportional to 408,709.90, 613,064.85 and 363,609.10

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Solution

The fourth proportional to 408,709.90, 613,064.85 and 363,609.10 is: 545,413.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,709.90 : 613,064.85 = 363,609.10 : x
  2. Step 2: Convert to fraction form
    408,709.90/613,064.85 = 363,609.10/x
  3. Step 3: Cross multiply
    408,709.90x = 613,064.85 × 363,609.10
  4. Step 4: Simplify right side
    408,709.90x = 222,915,958,350.14
  5. Step 5: Solve for x
    x = 222,915,958,350.14/408,709.90
  6. Step 6: Final answer
    x = 545,413.65

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1.5x scale

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.