Finding the Fourth Proportional to 638,608,543.70, 957,632,879.55 and 293,447,455.70
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Solution
The fourth proportional to 638,608,543.70, 957,632,879.55 and 293,447,455.70 is: 440,042,549.96
Step by Step Solution
- Step 1: Write the proportion equation
638,608,543.70 : 957,632,879.55 = 293,447,455.70 : x - Step 2: Convert to fraction form
638,608,543.70/957,632,879.55 = 293,447,455.70/x - Step 3: Cross multiply
638,608,543.70x = 957,632,879.55 × 293,447,455.70 - Step 4: Simplify right side
638,608,543.70x = 281,014,931,998,612,032 - Step 5: Solve for x
x = 281,014,931,998,612,032/638,608,543.70 - Step 6: Final answer
x = 440,042,549.96
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.