Finding the Fourth Proportional to 7,231,695.12, 9,979,861.74 and 3,968,813.43
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Solution
The fourth proportional to 7,231,695.12, 9,979,861.74 and 3,968,813.43 is: 5,477,029.75
Step by Step Solution
- Step 1: Write the proportion equation
7,231,695.12 : 9,979,861.74 = 3,968,813.43 : x - Step 2: Convert to fraction form
7,231,695.12/9,979,861.74 = 3,968,813.43/x - Step 3: Cross multiply
7,231,695.12x = 9,979,861.74 × 3,968,813.43 - Step 4: Simplify right side
7,231,695.12x = 39,608,209,303,255.17 - Step 5: Solve for x
x = 39,608,209,303,255.17/7,231,695.12 - Step 6: Final answer
x = 5,477,029.75
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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.