Finding the Fourth Proportional to 714,665.84, 986,240.79 and 392,396.81
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Solution
The fourth proportional to 714,665.84, 986,240.79 and 392,396.81 is: 541,508.65
Step by Step Solution
- Step 1: Write the proportion equation
714,665.84 : 986,240.79 = 392,396.81 : x - Step 2: Convert to fraction form
714,665.84/986,240.79 = 392,396.81/x - Step 3: Cross multiply
714,665.84x = 986,240.79 × 392,396.81 - Step 4: Simplify right side
714,665.84x = 386,997,734,956.68 - Step 5: Solve for x
x = 386,997,734,956.68/714,665.84 - Step 6: Final answer
x = 541,508.65
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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.