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Finding the Fourth Proportional to 620,413.33, 931,416.96 and 478,348.84

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Solution

The fourth proportional to 620,413.33, 931,416.96 and 478,348.84 is: 718,137.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,413.33 : 931,416.96 = 478,348.84 : x
  2. Step 2: Convert to fraction form
    620,413.33/931,416.96 = 478,348.84/x
  3. Step 3: Cross multiply
    620,413.33x = 931,416.96 × 478,348.84
  4. Step 4: Simplify right side
    620,413.33x = 445,542,222,372.33
  5. Step 5: Solve for x
    x = 445,542,222,372.33/620,413.33
  6. Step 6: Final answer
    x = 718,137.73

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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.