Finding the Fourth Proportional to 312,330,611.13, 430,764,923.37 and 274,573,043.79
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Solution
The fourth proportional to 312,330,611.13, 430,764,923.37 and 274,573,043.79 is: 378,689,862.45
Step by Step Solution
- Step 1: Write the proportion equation
312,330,611.13 : 430,764,923.37 = 274,573,043.79 : x - Step 2: Convert to fraction form
312,330,611.13/430,764,923.37 = 274,573,043.79/x - Step 3: Cross multiply
312,330,611.13x = 430,764,923.37 × 274,573,043.79 - Step 4: Simplify right side
312,330,611.13x = 118,276,436,167,667,008 - Step 5: Solve for x
x = 118,276,436,167,667,008/312,330,611.13 - Step 6: Final answer
x = 378,689,862.45
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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.