Finding the Fourth Proportional to 726,283.40, 1,088,042.70 and 430,449.80
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Solution
The fourth proportional to 726,283.40, 1,088,042.70 and 430,449.80 is: 644,855.39
Step by Step Solution
- Step 1: Write the proportion equation
726,283.40 : 1,088,042.70 = 430,449.80 : x - Step 2: Convert to fraction form
726,283.40/1,088,042.70 = 430,449.80/x - Step 3: Cross multiply
726,283.40x = 1,088,042.70 × 430,449.80 - Step 4: Simplify right side
726,283.40x = 468,347,762,606.46 - Step 5: Solve for x
x = 468,347,762,606.46/726,283.40 - Step 6: Final answer
x = 644,855.39
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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.