Finding the Fourth Proportional to 5,639,429,758.24, 7,782,623,096.64 and 3,381,736,858.72
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Solution
The fourth proportional to 5,639,429,758.24, 7,782,623,096.64 and 3,381,736,858.72 is: 4,666,922,811.65
Step by Step Solution
- Step 1: Write the proportion equation
5,639,429,758.24 : 7,782,623,096.64 = 3,381,736,858.72 : x - Step 2: Convert to fraction form
5,639,429,758.24/7,782,623,096.64 = 3,381,736,858.72/x - Step 3: Cross multiply
5,639,429,758.24x = 7,782,623,096.64 × 3,381,736,858.72 - Step 4: Simplify right side
5,639,429,758.24x = 26,318,783,383,433,072,640 - Step 5: Solve for x
x = 26,318,783,383,433,072,640/5,639,429,758.24 - Step 6: Final answer
x = 4,666,922,811.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.