Finding the Fourth Proportional to 2,893,321,861.12, 4,339,982,791.68 and 850,908,805.12
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Solution
The fourth proportional to 2,893,321,861.12, 4,339,982,791.68 and 850,908,805.12 is: 1,276,363,207.68
Step by Step Solution
- Step 1: Write the proportion equation
2,893,321,861.12 : 4,339,982,791.68 = 850,908,805.12 : x - Step 2: Convert to fraction form
2,893,321,861.12/4,339,982,791.68 = 850,908,805.12/x - Step 3: Cross multiply
2,893,321,861.12x = 4,339,982,791.68 × 850,908,805.12 - Step 4: Simplify right side
2,893,321,861.12x = 3,692,929,571,509,790,720 - Step 5: Solve for x
x = 3,692,929,571,509,790,720/2,893,321,861.12 - Step 6: Final answer
x = 1,276,363,207.68
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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.