Finding the Fourth Proportional to 8,205,872.16, 12,297,805.76 and 6,386,434.07
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Solution
The fourth proportional to 8,205,872.16, 12,297,805.76 and 6,386,434.07 is: 9,571,088.13
Step by Step Solution
- Step 1: Write the proportion equation
8,205,872.16 : 12,297,805.76 = 6,386,434.07 : x - Step 2: Convert to fraction form
8,205,872.16/12,297,805.76 = 6,386,434.07/x - Step 3: Cross multiply
8,205,872.16x = 12,297,805.76 × 6,386,434.07 - Step 4: Simplify right side
8,205,872.16x = 78,539,125,646,383.30 - Step 5: Solve for x
x = 78,539,125,646,383.30/8,205,872.16 - Step 6: Final answer
x = 9,571,088.13
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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.