Finding the Fourth Proportional to 647,101,218.30, 970,651,827.45 and 449,086,301.70
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Solution
The fourth proportional to 647,101,218.30, 970,651,827.45 and 449,086,301.70 is: 673,629,452.55
Step by Step Solution
- Step 1: Write the proportion equation
647,101,218.30 : 970,651,827.45 = 449,086,301.70 : x - Step 2: Convert to fraction form
647,101,218.30/970,651,827.45 = 449,086,301.70/x - Step 3: Cross multiply
647,101,218.30x = 970,651,827.45 × 449,086,301.70 - Step 4: Simplify right side
647,101,218.30x = 435,906,439,427,867,072 - Step 5: Solve for x
x = 435,906,439,427,867,072/647,101,218.30 - Step 6: Final answer
x = 673,629,452.55
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Double scale
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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.