Finding the Fourth Proportional to 1,117,750,844.60, 1,676,626,266.90 and 505,530,812.60
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Solution
The fourth proportional to 1,117,750,844.60, 1,676,626,266.90 and 505,530,812.60 is: 758,296,218.90
Step by Step Solution
- Step 1: Write the proportion equation
1,117,750,844.60 : 1,676,626,266.90 = 505,530,812.60 : x - Step 2: Convert to fraction form
1,117,750,844.60/1,676,626,266.90 = 505,530,812.60/x - Step 3: Cross multiply
1,117,750,844.60x = 1,676,626,266.90 × 505,530,812.60 - Step 4: Simplify right side
1,117,750,844.60x = 847,586,239,132,461,568 - Step 5: Solve for x
x = 847,586,239,132,461,568/1,117,750,844.60 - Step 6: Final answer
x = 758,296,218.90
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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.