Finding the Fourth Proportional to 1,345,275,205.12, 1,856,478,961.92 and 727,176,517.12
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Solution
The fourth proportional to 1,345,275,205.12, 1,856,478,961.92 and 727,176,517.12 is: 1,003,503,149.76
Step by Step Solution
- Step 1: Write the proportion equation
1,345,275,205.12 : 1,856,478,961.92 = 727,176,517.12 : x - Step 2: Convert to fraction form
1,345,275,205.12/1,856,478,961.92 = 727,176,517.12/x - Step 3: Cross multiply
1,345,275,205.12x = 1,856,478,961.92 × 727,176,517.12 - Step 4: Simplify right side
1,345,275,205.12x = 1,349,987,905,635,538,688 - Step 5: Solve for x
x = 1,349,987,905,635,538,688/1,345,275,205.12 - Step 6: Final answer
x = 1,003,503,149.76
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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.