Finding the Fourth Proportional to 319,269,211.80, 478,903,817.70 and 319,269,211.80
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Solution
The fourth proportional to 319,269,211.80, 478,903,817.70 and 319,269,211.80 is: 478,903,817.70
Step by Step Solution
- Step 1: Write the proportion equation
319,269,211.80 : 478,903,817.70 = 319,269,211.80 : x - Step 2: Convert to fraction form
319,269,211.80/478,903,817.70 = 319,269,211.80/x - Step 3: Cross multiply
319,269,211.80x = 478,903,817.70 × 319,269,211.80 - Step 4: Simplify right side
319,269,211.80x = 152,899,244,405,089,888 - Step 5: Solve for x
x = 152,899,244,405,089,888/319,269,211.80 - Step 6: Final answer
x = 478,903,817.70
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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.