Finding the Fourth Proportional to 1,348,164,099.70, 2,022,246,149.55 and 378,815,715.70
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Solution
The fourth proportional to 1,348,164,099.70, 2,022,246,149.55 and 378,815,715.70 is: 568,223,573.55
Step by Step Solution
- Step 1: Write the proportion equation
1,348,164,099.70 : 2,022,246,149.55 = 378,815,715.70 : x - Step 2: Convert to fraction form
1,348,164,099.70/2,022,246,149.55 = 378,815,715.70/x - Step 3: Cross multiply
1,348,164,099.70x = 2,022,246,149.55 × 378,815,715.70 - Step 4: Simplify right side
1,348,164,099.70x = 766,058,622,463,352,448 - Step 5: Solve for x
x = 766,058,622,463,352,448/1,348,164,099.70 - Step 6: Final answer
x = 568,223,573.55
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Half scale
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Double scale
Find fourth proportional to 1,348,164,100.70, 2,022,246,151.05 and 378,815,716.70
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.