Finding the Fourth Proportional to 7,136,381.84, 10,702,173.12 and 2,586,478.20
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Solution
The fourth proportional to 7,136,381.84, 10,702,173.12 and 2,586,478.20 is: 3,878,847.59
Step by Step Solution
- Step 1: Write the proportion equation
7,136,381.84 : 10,702,173.12 = 2,586,478.20 : x - Step 2: Convert to fraction form
7,136,381.84/10,702,173.12 = 2,586,478.20/x - Step 3: Cross multiply
7,136,381.84x = 10,702,173.12 × 2,586,478.20 - Step 4: Simplify right side
7,136,381.84x = 27,680,937,467,505.98 - Step 5: Solve for x
x = 27,680,937,467,505.98/7,136,381.84 - Step 6: Final answer
x = 3,878,847.59
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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.