Finding the Fourth Proportional to 6,457,741.05, 8,911,573.79 and 3,557,403.21
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Solution
The fourth proportional to 6,457,741.05, 8,911,573.79 and 3,557,403.21 is: 4,909,156.46
Step by Step Solution
- Step 1: Write the proportion equation
6,457,741.05 : 8,911,573.79 = 3,557,403.21 : x - Step 2: Convert to fraction form
6,457,741.05/8,911,573.79 = 3,557,403.21/x - Step 3: Cross multiply
6,457,741.05x = 8,911,573.79 × 3,557,403.21 - Step 4: Simplify right side
6,457,741.05x = 31,702,061,188,910.85 - Step 5: Solve for x
x = 31,702,061,188,910.85/6,457,741.05 - Step 6: Final answer
x = 4,909,156.46
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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.