Finding the Fourth Proportional to 804,821,348.10, 1,207,232,022.15 and 437,489,328.90
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Solution
The fourth proportional to 804,821,348.10, 1,207,232,022.15 and 437,489,328.90 is: 656,233,993.35
Step by Step Solution
- Step 1: Write the proportion equation
804,821,348.10 : 1,207,232,022.15 = 437,489,328.90 : x - Step 2: Convert to fraction form
804,821,348.10/1,207,232,022.15 = 437,489,328.90/x - Step 3: Cross multiply
804,821,348.10x = 1,207,232,022.15 × 437,489,328.90 - Step 4: Simplify right side
804,821,348.10x = 528,151,127,196,993,472 - Step 5: Solve for x
x = 528,151,127,196,993,472/804,821,348.10 - Step 6: Final answer
x = 656,233,993.35
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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.