Finding the Fourth Proportional to 811,136, 1,216,616.38 and 271,331.08
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Solution
The fourth proportional to 811,136, 1,216,616.38 and 271,331.08 is: 406,967.31
Step by Step Solution
- Step 1: Write the proportion equation
811,136 : 1,216,616.38 = 271,331.08 : x - Step 2: Convert to fraction form
811,136/1,216,616.38 = 271,331.08/x - Step 3: Cross multiply
811,136x = 1,216,616.38 × 271,331.08 - Step 4: Simplify right side
811,136x = 330,105,836,331.09 - Step 5: Solve for x
x = 330,105,836,331.09/811,136 - Step 6: Final answer
x = 406,967.31
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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.