Finding the Fourth Proportional to 714,665.09, 986,239.76 and 392,396.06
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Solution
The fourth proportional to 714,665.09, 986,239.76 and 392,396.06 is: 541,507.62
Step by Step Solution
- Step 1: Write the proportion equation
714,665.09 : 986,239.76 = 392,396.06 : x - Step 2: Convert to fraction form
714,665.09/986,239.76 = 392,396.06/x - Step 3: Cross multiply
714,665.09x = 986,239.76 × 392,396.06 - Step 4: Simplify right side
714,665.09x = 386,996,596,542.97 - Step 5: Solve for x
x = 386,996,596,542.97/714,665.09 - Step 6: Final answer
x = 541,507.62
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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.