Finding the Fourth Proportional to 312,330,605.13, 430,764,915.11 and 274,573,037.79
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Solution
The fourth proportional to 312,330,605.13, 430,764,915.11 and 274,573,037.79 is: 378,689,854.18
Step by Step Solution
- Step 1: Write the proportion equation
312,330,605.13 : 430,764,915.11 = 274,573,037.79 : x - Step 2: Convert to fraction form
312,330,605.13/430,764,915.11 = 274,573,037.79/x - Step 3: Cross multiply
312,330,605.13x = 430,764,915.11 × 274,573,037.79 - Step 4: Simplify right side
312,330,605.13x = 118,276,431,313,731,328 - Step 5: Solve for x
x = 118,276,431,313,731,328/312,330,605.13 - Step 6: Final answer
x = 378,689,854.18
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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.