Finding the Fourth Proportional to 654,886,311.95, 981,845,190.11 and 396,043,987.09
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Solution
The fourth proportional to 654,886,311.95, 981,845,190.11 and 396,043,987.09 is: 593,773,112.52
Step by Step Solution
- Step 1: Write the proportion equation
654,886,311.95 : 981,845,190.11 = 396,043,987.09 : x - Step 2: Convert to fraction form
654,886,311.95/981,845,190.11 = 396,043,987.09/x - Step 3: Cross multiply
654,886,311.95x = 981,845,190.11 × 396,043,987.09 - Step 4: Simplify right side
654,886,311.95x = 388,853,883,794,447,168 - Step 5: Solve for x
x = 388,853,883,794,447,168/654,886,311.95 - Step 6: Final answer
x = 593,773,112.52
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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.