Finding the Fourth Proportional to 512,318.74, 768,478.11 and 262,841.62
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Solution
The fourth proportional to 512,318.74, 768,478.11 and 262,841.62 is: 394,262.43
Step by Step Solution
- Step 1: Write the proportion equation
512,318.74 : 768,478.11 = 262,841.62 : x - Step 2: Convert to fraction form
512,318.74/768,478.11 = 262,841.62/x - Step 3: Cross multiply
512,318.74x = 768,478.11 × 262,841.62 - Step 4: Simplify right side
512,318.74x = 201,988,031,366.94 - Step 5: Solve for x
x = 201,988,031,366.94/512,318.74 - Step 6: Final answer
x = 394,262.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.