Finding the Fourth Proportional to 1,965,494,728.13, 2,948,656,211.70 and 637,419,211.74
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Solution
The fourth proportional to 1,965,494,728.13, 2,948,656,211.70 and 637,419,211.74 is: 956,263,118.52
Step by Step Solution
- Step 1: Write the proportion equation
1,965,494,728.13 : 2,948,656,211.70 = 637,419,211.74 : x - Step 2: Convert to fraction form
1,965,494,728.13/2,948,656,211.70 = 637,419,211.74/x - Step 3: Cross multiply
1,965,494,728.13x = 2,948,656,211.70 × 637,419,211.74 - Step 4: Simplify right side
1,965,494,728.13x = 1,879,530,118,154,068,480 - Step 5: Solve for x
x = 1,879,530,118,154,068,480/1,965,494,728.13 - Step 6: Final answer
x = 956,263,118.52
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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.