Finding the Fourth Proportional to 409,811.70, 614,717.55 and 344,857.80
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Solution
The fourth proportional to 409,811.70, 614,717.55 and 344,857.80 is: 517,286.70
Step by Step Solution
- Step 1: Write the proportion equation
409,811.70 : 614,717.55 = 344,857.80 : x - Step 2: Convert to fraction form
409,811.70/614,717.55 = 344,857.80/x - Step 3: Cross multiply
409,811.70x = 614,717.55 × 344,857.80 - Step 4: Simplify right side
409,811.70x = 211,990,141,914.39 - Step 5: Solve for x
x = 211,990,141,914.39/409,811.70 - Step 6: Final answer
x = 517,286.70
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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.