Finding the Fourth Proportional to 821,639.80, 1,232,459.70 and 379,271.80
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Solution
The fourth proportional to 821,639.80, 1,232,459.70 and 379,271.80 is: 568,907.70
Step by Step Solution
- Step 1: Write the proportion equation
821,639.80 : 1,232,459.70 = 379,271.80 : x - Step 2: Convert to fraction form
821,639.80/1,232,459.70 = 379,271.80/x - Step 3: Cross multiply
821,639.80x = 1,232,459.70 × 379,271.80 - Step 4: Simplify right side
821,639.80x = 467,437,208,846.46 - Step 5: Solve for x
x = 467,437,208,846.46/821,639.80 - Step 6: Final answer
x = 568,907.70
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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.