Finding the Fourth Proportional to 861,749.14, 1,291,413.80 and 681,040.06
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Solution
The fourth proportional to 861,749.14, 1,291,413.80 and 681,040.06 is: 1,020,603.90
Step by Step Solution
- Step 1: Write the proportion equation
861,749.14 : 1,291,413.80 = 681,040.06 : x - Step 2: Convert to fraction form
861,749.14/1,291,413.80 = 681,040.06/x - Step 3: Cross multiply
861,749.14x = 1,291,413.80 × 681,040.06 - Step 4: Simplify right side
861,749.14x = 879,504,533,744.25 - Step 5: Solve for x
x = 879,504,533,744.25/861,749.14 - Step 6: Final answer
x = 1,020,603.90
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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.