Finding the Fourth Proportional to 8,438,545.75, 11,642,830.64 and 5,299,147.96
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Solution
The fourth proportional to 8,438,545.75, 11,642,830.64 and 5,299,147.96 is: 7,311,340.61
Step by Step Solution
- Step 1: Write the proportion equation
8,438,545.75 : 11,642,830.64 = 5,299,147.96 : x - Step 2: Convert to fraction form
8,438,545.75/11,642,830.64 = 5,299,147.96/x - Step 3: Cross multiply
8,438,545.75x = 11,642,830.64 × 5,299,147.96 - Step 4: Simplify right side
8,438,545.75x = 61,697,082,234,581.50 - Step 5: Solve for x
x = 61,697,082,234,581.50/8,438,545.75 - Step 6: Final answer
x = 7,311,340.61
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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.