Finding the Fourth Proportional to 1,131,036,217.70, 1,696,554,326.55 and 313,148,518.70
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Solution
The fourth proportional to 1,131,036,217.70, 1,696,554,326.55 and 313,148,518.70 is: 469,722,778.05
Step by Step Solution
- Step 1: Write the proportion equation
1,131,036,217.70 : 1,696,554,326.55 = 313,148,518.70 : x - Step 2: Convert to fraction form
1,131,036,217.70/1,696,554,326.55 = 313,148,518.70/x - Step 3: Cross multiply
1,131,036,217.70x = 1,696,554,326.55 × 313,148,518.70 - Step 4: Simplify right side
1,131,036,217.70x = 531,273,474,253,208,576 - Step 5: Solve for x
x = 531,273,474,253,208,576/1,131,036,217.70 - Step 6: Final answer
x = 469,722,778.05
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Double scale
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Similar ratio
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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.