Finding the Fourth Proportional to 871,396.36, 1,202,639.87 and 489,423.17
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Solution
The fourth proportional to 871,396.36, 1,202,639.87 and 489,423.17 is: 675,467.39
Step by Step Solution
- Step 1: Write the proportion equation
871,396.36 : 1,202,639.87 = 489,423.17 : x - Step 2: Convert to fraction form
871,396.36/1,202,639.87 = 489,423.17/x - Step 3: Cross multiply
871,396.36x = 1,202,639.87 × 489,423.17 - Step 4: Simplify right side
871,396.36x = 588,599,821,773.95 - Step 5: Solve for x
x = 588,599,821,773.95/871,396.36 - Step 6: Final answer
x = 675,467.39
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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.