Finding the Fourth Proportional to 871,409.30, 1,202,657.60 and 489,436.07
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Solution
The fourth proportional to 871,409.30, 1,202,657.60 and 489,436.07 is: 675,485.11
Step by Step Solution
- Step 1: Write the proportion equation
871,409.30 : 1,202,657.60 = 489,436.07 : x - Step 2: Convert to fraction form
871,409.30/1,202,657.60 = 489,436.07/x - Step 3: Cross multiply
871,409.30x = 1,202,657.60 × 489,436.07 - Step 4: Simplify right side
871,409.30x = 588,624,009,299.63 - Step 5: Solve for x
x = 588,624,009,299.63/871,409.30 - Step 6: Final answer
x = 675,485.11
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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.