Finding the Fourth Proportional to 721,515,614.80, 1,082,273,422.20 and 618,203,484.40
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Solution
The fourth proportional to 721,515,614.80, 1,082,273,422.20 and 618,203,484.40 is: 927,305,226.60
Step by Step Solution
- Step 1: Write the proportion equation
721,515,614.80 : 1,082,273,422.20 = 618,203,484.40 : x - Step 2: Convert to fraction form
721,515,614.80/1,082,273,422.20 = 618,203,484.40/x - Step 3: Cross multiply
721,515,614.80x = 1,082,273,422.20 × 618,203,484.40 - Step 4: Simplify right side
721,515,614.80x = 669,065,200,677,552,256 - Step 5: Solve for x
x = 669,065,200,677,552,256/721,515,614.80 - Step 6: Final answer
x = 927,305,226.60
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Similar ratio
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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.