Finding the Fourth Proportional to 8,518,310.70, 12,777,466.05 and 5,329,664.70
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Solution
The fourth proportional to 8,518,310.70, 12,777,466.05 and 5,329,664.70 is: 7,994,497.05
Step by Step Solution
- Step 1: Write the proportion equation
8,518,310.70 : 12,777,466.05 = 5,329,664.70 : x - Step 2: Convert to fraction form
8,518,310.70/12,777,466.05 = 5,329,664.70/x - Step 3: Cross multiply
8,518,310.70x = 12,777,466.05 × 5,329,664.70 - Step 4: Simplify right side
8,518,310.70x = 68,099,609,762,133.44 - Step 5: Solve for x
x = 68,099,609,762,133.44/8,518,310.70 - Step 6: Final answer
x = 7,994,497.05
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Double scale
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Similar ratio
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1.5x scale
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.