Finding the Fourth Proportional to 5,408,995,936.21, 7,471,416,374.81 and 4,472,979,531.73
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Solution
The fourth proportional to 5,408,995,936.21, 7,471,416,374.81 and 4,472,979,531.73 is: 6,178,502,056.88
Step by Step Solution
- Step 1: Write the proportion equation
5,408,995,936.21 : 7,471,416,374.81 = 4,472,979,531.73 : x - Step 2: Convert to fraction form
5,408,995,936.21/7,471,416,374.81 = 4,472,979,531.73/x - Step 3: Cross multiply
5,408,995,936.21x = 7,471,416,374.81 × 4,472,979,531.73 - Step 4: Simplify right side
5,408,995,936.21x = 33,419,492,517,534,334,976 - Step 5: Solve for x
x = 33,419,492,517,534,334,976/5,408,995,936.21 - Step 6: Final answer
x = 6,178,502,056.88
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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.