Finding the Fourth Proportional to 664,368,310.80, 996,552,466.20 and 276,947,821.80
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Solution
The fourth proportional to 664,368,310.80, 996,552,466.20 and 276,947,821.80 is: 415,421,732.70
Step by Step Solution
- Step 1: Write the proportion equation
664,368,310.80 : 996,552,466.20 = 276,947,821.80 : x - Step 2: Convert to fraction form
664,368,310.80/996,552,466.20 = 276,947,821.80/x - Step 3: Cross multiply
664,368,310.80x = 996,552,466.20 × 276,947,821.80 - Step 4: Simplify right side
664,368,310.80x = 275,993,034,823,508,160 - Step 5: Solve for x
x = 275,993,034,823,508,160/664,368,310.80 - Step 6: Final answer
x = 415,421,732.70
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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.