Finding the Fourth Proportional to 739,286.74, 1,020,215.01 and 399,754.18
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Solution
The fourth proportional to 739,286.74, 1,020,215.01 and 399,754.18 is: 551,660.39
Step by Step Solution
- Step 1: Write the proportion equation
739,286.74 : 1,020,215.01 = 399,754.18 : x - Step 2: Convert to fraction form
739,286.74/1,020,215.01 = 399,754.18/x - Step 3: Cross multiply
739,286.74x = 1,020,215.01 × 399,754.18 - Step 4: Simplify right side
739,286.74x = 407,835,214,746.24 - Step 5: Solve for x
x = 407,835,214,746.24/739,286.74 - Step 6: Final answer
x = 551,660.39
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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.