Finding the Fourth Proportional to 6,173,136.40, 8,519,451.37 and 3,420,687.21
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Solution
The fourth proportional to 6,173,136.40, 8,519,451.37 and 3,420,687.21 is: 4,720,838.23
Step by Step Solution
- Step 1: Write the proportion equation
6,173,136.40 : 8,519,451.37 = 3,420,687.21 : x - Step 2: Convert to fraction form
6,173,136.40/8,519,451.37 = 3,420,687.21/x - Step 3: Cross multiply
6,173,136.40x = 8,519,451.37 × 3,420,687.21 - Step 4: Simplify right side
6,173,136.40x = 29,142,378,337,575.97 - Step 5: Solve for x
x = 29,142,378,337,575.97/6,173,136.40 - Step 6: Final answer
x = 4,720,838.23
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1.5x scale
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.