Finding the Fourth Proportional to 1,384,128,220.40, 2,076,192,330.60 and 728,182,185.20
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Solution
The fourth proportional to 1,384,128,220.40, 2,076,192,330.60 and 728,182,185.20 is: 1,092,273,277.80
Step by Step Solution
- Step 1: Write the proportion equation
1,384,128,220.40 : 2,076,192,330.60 = 728,182,185.20 : x - Step 2: Convert to fraction form
1,384,128,220.40/2,076,192,330.60 = 728,182,185.20/x - Step 3: Cross multiply
1,384,128,220.40x = 2,076,192,330.60 × 728,182,185.20 - Step 4: Simplify right side
1,384,128,220.40x = 1,511,846,268,191,788,800 - Step 5: Solve for x
x = 1,511,846,268,191,788,800/1,384,128,220.40 - Step 6: Final answer
x = 1,092,273,277.80
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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.