Finding the Fourth Proportional to 416,713.80, 625,178.56 and 128,519.09
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Solution
The fourth proportional to 416,713.80, 625,178.56 and 128,519.09 is: 192,811.89
Step by Step Solution
- Step 1: Write the proportion equation
416,713.80 : 625,178.56 = 128,519.09 : x - Step 2: Convert to fraction form
416,713.80/625,178.56 = 128,519.09/x - Step 3: Cross multiply
416,713.80x = 625,178.56 × 128,519.09 - Step 4: Simplify right side
416,713.80x = 80,347,376,492.82 - Step 5: Solve for x
x = 80,347,376,492.82/416,713.80 - Step 6: Final answer
x = 192,811.89
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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.