Finding the Fourth Proportional to 871,413.81, 1,202,663.82 and 489,440.58
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Solution
The fourth proportional to 871,413.81, 1,202,663.82 and 489,440.58 is: 675,491.33
Step by Step Solution
- Step 1: Write the proportion equation
871,413.81 : 1,202,663.82 = 489,440.58 : x - Step 2: Convert to fraction form
871,413.81/1,202,663.82 = 489,440.58/x - Step 3: Cross multiply
871,413.81x = 1,202,663.82 × 489,440.58 - Step 4: Simplify right side
871,413.81x = 588,632,477,605.82 - Step 5: Solve for x
x = 588,632,477,605.82/871,413.81 - Step 6: Final answer
x = 675,491.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.