Finding the Fourth Proportional to 8,915,819.76, 12,305,131.12 and 4,995,840.96
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Solution
The fourth proportional to 8,915,819.76, 12,305,131.12 and 4,995,840.96 is: 6,894,988.88
Step by Step Solution
- Step 1: Write the proportion equation
8,915,819.76 : 12,305,131.12 = 4,995,840.96 : x - Step 2: Convert to fraction form
8,915,819.76/12,305,131.12 = 4,995,840.96/x - Step 3: Cross multiply
8,915,819.76x = 12,305,131.12 × 4,995,840.96 - Step 4: Simplify right side
8,915,819.76x = 61,474,478,067,466.67 - Step 5: Solve for x
x = 61,474,478,067,466.67/8,915,819.76 - Step 6: Final answer
x = 6,894,988.88
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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.