Finding the Fourth Proportional to 849,649,613.20, 1,274,474,419.80 and 620,067,101.20
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Solution
The fourth proportional to 849,649,613.20, 1,274,474,419.80 and 620,067,101.20 is: 930,100,651.80
Step by Step Solution
- Step 1: Write the proportion equation
849,649,613.20 : 1,274,474,419.80 = 620,067,101.20 : x - Step 2: Convert to fraction form
849,649,613.20/1,274,474,419.80 = 620,067,101.20/x - Step 3: Cross multiply
849,649,613.20x = 1,274,474,419.80 × 620,067,101.20 - Step 4: Simplify right side
849,649,613.20x = 790,259,659,038,937,856 - Step 5: Solve for x
x = 790,259,659,038,937,856/849,649,613.20 - Step 6: Final answer
x = 930,100,651.80
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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.