Finding the Fourth Proportional to 664,368,471.80, 996,552,707.70 and 276,947,982.80
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Solution
The fourth proportional to 664,368,471.80, 996,552,707.70 and 276,947,982.80 is: 415,421,974.20
Step by Step Solution
- Step 1: Write the proportion equation
664,368,471.80 : 996,552,707.70 = 276,947,982.80 : x - Step 2: Convert to fraction form
664,368,471.80/996,552,707.70 = 276,947,982.80/x - Step 3: Cross multiply
664,368,471.80x = 996,552,707.70 × 276,947,982.80 - Step 4: Simplify right side
664,368,471.80x = 275,993,262,151,393,056 - Step 5: Solve for x
x = 275,993,262,151,393,056/664,368,471.80 - Step 6: Final answer
x = 415,421,974.20
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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.