Finding the Fourth Proportional to 312,330,615.13, 430,764,928.86 and 274,573,047.79
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Solution
The fourth proportional to 312,330,615.13, 430,764,928.86 and 274,573,047.79 is: 378,689,867.94
Step by Step Solution
- Step 1: Write the proportion equation
312,330,615.13 : 430,764,928.86 = 274,573,047.79 : x - Step 2: Convert to fraction form
312,330,615.13/430,764,928.86 = 274,573,047.79/x - Step 3: Cross multiply
312,330,615.13x = 430,764,928.86 × 274,573,047.79 - Step 4: Simplify right side
312,330,615.13x = 118,276,439,398,132,736 - Step 5: Solve for x
x = 118,276,439,398,132,736/312,330,615.13 - Step 6: Final answer
x = 378,689,867.94
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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.