Finding the Fourth Proportional to 1,237,851,336.09, 1,856,383,073.19 and 408,650,586.75
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Solution
The fourth proportional to 1,237,851,336.09, 1,856,383,073.19 and 408,650,586.75 is: 612,845,832.11
Step by Step Solution
- Step 1: Write the proportion equation
1,237,851,336.09 : 1,856,383,073.19 = 408,650,586.75 : x - Step 2: Convert to fraction form
1,237,851,336.09/1,856,383,073.19 = 408,650,586.75/x - Step 3: Cross multiply
1,237,851,336.09x = 1,856,383,073.19 × 408,650,586.75 - Step 4: Simplify right side
1,237,851,336.09x = 758,612,032,091,861,760 - Step 5: Solve for x
x = 758,612,032,091,861,760/1,237,851,336.09 - Step 6: Final answer
x = 612,845,832.11
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Double scale
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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.