Finding the Fourth Proportional to 6,438,672.41, 8,876,489.42 and 5,136,344.66
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Solution
The fourth proportional to 6,438,672.41, 8,876,489.42 and 5,136,344.66 is: 7,081,072.95
Step by Step Solution
- Step 1: Write the proportion equation
6,438,672.41 : 8,876,489.42 = 5,136,344.66 : x - Step 2: Convert to fraction form
6,438,672.41/8,876,489.42 = 5,136,344.66/x - Step 3: Cross multiply
6,438,672.41x = 8,876,489.42 × 5,136,344.66 - Step 4: Simplify right side
6,438,672.41x = 45,592,709,006,281.77 - Step 5: Solve for x
x = 45,592,709,006,281.77/6,438,672.41 - Step 6: Final answer
x = 7,081,072.95
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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.