Finding the Fourth Proportional to 11,457,578.18, 15,811,142.49 and 6,300,939.78
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Solution
The fourth proportional to 11,457,578.18, 15,811,142.49 and 6,300,939.78 is: 8,695,123.45
Step by Step Solution
- Step 1: Write the proportion equation
11,457,578.18 : 15,811,142.49 = 6,300,939.78 : x - Step 2: Convert to fraction form
11,457,578.18/15,811,142.49 = 6,300,939.78/x - Step 3: Cross multiply
11,457,578.18x = 15,811,142.49 × 6,300,939.78 - Step 4: Simplify right side
11,457,578.18x = 99,625,056,682,489.25 - Step 5: Solve for x
x = 99,625,056,682,489.25/11,457,578.18 - Step 6: Final answer
x = 8,695,123.45
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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.