Finding the Fourth Proportional to 621,405.84, 857,527.25 and 345,757.58
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Solution
The fourth proportional to 621,405.84, 857,527.25 and 345,757.58 is: 477,138.32
Step by Step Solution
- Step 1: Write the proportion equation
621,405.84 : 857,527.25 = 345,757.58 : x - Step 2: Convert to fraction form
621,405.84/857,527.25 = 345,757.58/x - Step 3: Cross multiply
621,405.84x = 857,527.25 × 345,757.58 - Step 4: Simplify right side
621,405.84x = 296,496,540,727.63 - Step 5: Solve for x
x = 296,496,540,727.63/621,405.84 - Step 6: Final answer
x = 477,138.32
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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.