Finding the Fourth Proportional to 721,891.20, 996,197.76 and 399,594.36
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Solution
The fourth proportional to 721,891.20, 996,197.76 and 399,594.36 is: 551,433.52
Step by Step Solution
- Step 1: Write the proportion equation
721,891.20 : 996,197.76 = 399,594.36 : x - Step 2: Convert to fraction form
721,891.20/996,197.76 = 399,594.36/x - Step 3: Cross multiply
721,891.20x = 996,197.76 × 399,594.36 - Step 4: Simplify right side
721,891.20x = 398,075,006,340.63 - Step 5: Solve for x
x = 398,075,006,340.63/721,891.20 - Step 6: Final answer
x = 551,433.52
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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.