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Finding the Fourth Proportional to 622,413.60, 933,401.70 and 285,615.60

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Solution

The fourth proportional to 622,413.60, 933,401.70 and 285,615.60 is: 428,323.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,413.60 : 933,401.70 = 285,615.60 : x
  2. Step 2: Convert to fraction form
    622,413.60/933,401.70 = 285,615.60/x
  3. Step 3: Cross multiply
    622,413.60x = 933,401.70 × 285,615.60
  4. Step 4: Simplify right side
    622,413.60x = 266,594,086,586.52
  5. Step 5: Solve for x
    x = 266,594,086,586.52/622,413.60
  6. Step 6: Final answer
    x = 428,323.04

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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.