Home / 403,628.06-605,145.60-193,413.62

Finding the Fourth Proportional to 403,628.06, 605,145.60 and 193,413.62

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Solution

The fourth proportional to 403,628.06, 605,145.60 and 193,413.62 is: 289,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,628.06 : 605,145.60 = 193,413.62 : x
  2. Step 2: Convert to fraction form
    403,628.06/605,145.60 = 193,413.62/x
  3. Step 3: Cross multiply
    403,628.06x = 605,145.60 × 193,413.62
  4. Step 4: Simplify right side
    403,628.06x = 117,043,401,123.07
  5. Step 5: Solve for x
    x = 117,043,401,123.07/403,628.06
  6. Step 6: Final answer
    x = 289,978.36

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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.