Finding the Fourth Proportional to 7,241,664.88, 9,993,503.68 and 3,978,485.92
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Solution
The fourth proportional to 7,241,664.88, 9,993,503.68 and 3,978,485.92 is: 5,490,313.95
Step by Step Solution
- Step 1: Write the proportion equation
7,241,664.88 : 9,993,503.68 = 3,978,485.92 : x - Step 2: Convert to fraction form
7,241,664.88/9,993,503.68 = 3,978,485.92/x - Step 3: Cross multiply
7,241,664.88x = 9,993,503.68 × 3,978,485.92 - Step 4: Simplify right side
7,241,664.88x = 39,759,013,682,348.19 - Step 5: Solve for x
x = 39,759,013,682,348.19/7,241,664.88 - Step 6: Final answer
x = 5,490,313.95
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1.5x scale
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.