Finding the Fourth Proportional to 1,131,036,310.70, 1,696,554,466.05 and 313,148,611.70
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Solution
The fourth proportional to 1,131,036,310.70, 1,696,554,466.05 and 313,148,611.70 is: 469,722,917.55
Step by Step Solution
- Step 1: Write the proportion equation
1,131,036,310.70 : 1,696,554,466.05 = 313,148,611.70 : x - Step 2: Convert to fraction form
1,131,036,310.70/1,696,554,466.05 = 313,148,611.70/x - Step 3: Cross multiply
1,131,036,310.70x = 1,696,554,466.05 × 313,148,611.70 - Step 4: Simplify right side
1,131,036,310.70x = 531,273,675,716,992,256 - Step 5: Solve for x
x = 531,273,675,716,992,256/1,131,036,310.70 - Step 6: Final answer
x = 469,722,917.55
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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.