Finding the Fourth Proportional to 511,340.74, 705,655.19 and 281,907.18
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Solution
The fourth proportional to 511,340.74, 705,655.19 and 281,907.18 is: 389,034.65
Step by Step Solution
- Step 1: Write the proportion equation
511,340.74 : 705,655.19 = 281,907.18 : x - Step 2: Convert to fraction form
511,340.74/705,655.19 = 281,907.18/x - Step 3: Cross multiply
511,340.74x = 705,655.19 × 281,907.18 - Step 4: Simplify right side
511,340.74x = 198,929,265,370.03 - Step 5: Solve for x
x = 198,929,265,370.03/511,340.74 - Step 6: Final answer
x = 389,034.65
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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.