Finding the Fourth Proportional to 8,512,497.40, 12,768,746.10 and 7,728,676.60
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Solution
The fourth proportional to 8,512,497.40, 12,768,746.10 and 7,728,676.60 is: 11,593,014.90
Step by Step Solution
- Step 1: Write the proportion equation
8,512,497.40 : 12,768,746.10 = 7,728,676.60 : x - Step 2: Convert to fraction form
8,512,497.40/12,768,746.10 = 7,728,676.60/x - Step 3: Cross multiply
8,512,497.40x = 12,768,746.10 × 7,728,676.60 - Step 4: Simplify right side
8,512,497.40x = 98,685,509,194,411.25 - Step 5: Solve for x
x = 98,685,509,194,411.25/8,512,497.40 - Step 6: Final answer
x = 11,593,014.90
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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.