Finding the Fourth Proportional to 3,903,232,173.15, 5,381,257,964.58 and 3,102,134,688.21
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Solution
The fourth proportional to 3,903,232,173.15, 5,381,257,964.58 and 3,102,134,688.21 is: 4,276,811,180.48
Step by Step Solution
- Step 1: Write the proportion equation
3,903,232,173.15 : 5,381,257,964.58 = 3,102,134,688.21 : x - Step 2: Convert to fraction form
3,903,232,173.15/5,381,257,964.58 = 3,102,134,688.21/x - Step 3: Cross multiply
3,903,232,173.15x = 5,381,257,964.58 × 3,102,134,688.21 - Step 4: Simplify right side
3,903,232,173.15x = 16,693,386,998,129,956,864 - Step 5: Solve for x
x = 16,693,386,998,129,956,864/3,903,232,173.15 - Step 6: Final answer
x = 4,276,811,180.48
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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.