Finding the Fourth Proportional to 998,478.20, 1,497,723.70 and 399,489.40
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Solution
The fourth proportional to 998,478.20, 1,497,723.70 and 399,489.40 is: 599,236.66
Step by Step Solution
- Step 1: Write the proportion equation
998,478.20 : 1,497,723.70 = 399,489.40 : x - Step 2: Convert to fraction form
998,478.20/1,497,723.70 = 399,489.40/x - Step 3: Cross multiply
998,478.20x = 1,497,723.70 × 399,489.40 - Step 4: Simplify right side
998,478.20x = 598,324,742,278.78 - Step 5: Solve for x
x = 598,324,742,278.78/998,478.20 - Step 6: Final answer
x = 599,236.66
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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.