Finding the Fourth Proportional to 643,743.48, 965,615.19 and 343,313.88
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Solution
The fourth proportional to 643,743.48, 965,615.19 and 343,313.88 is: 514,970.80
Step by Step Solution
- Step 1: Write the proportion equation
643,743.48 : 965,615.19 = 343,313.88 : x - Step 2: Convert to fraction form
643,743.48/965,615.19 = 343,313.88/x - Step 3: Cross multiply
643,743.48x = 965,615.19 × 343,313.88 - Step 4: Simplify right side
643,743.48x = 331,509,097,465.84 - Step 5: Solve for x
x = 331,509,097,465.84/643,743.48 - Step 6: Final answer
x = 514,970.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.