Finding the Fourth Proportional to 393,412.80, 590,410.80 and 288,436.80
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Solution
The fourth proportional to 393,412.80, 590,410.80 and 288,436.80 is: 432,868.99
Step by Step Solution
- Step 1: Write the proportion equation
393,412.80 : 590,410.80 = 288,436.80 : x - Step 2: Convert to fraction form
393,412.80/590,410.80 = 288,436.80/x - Step 3: Cross multiply
393,412.80x = 590,410.80 × 288,436.80 - Step 4: Simplify right side
393,412.80x = 170,296,201,837.44 - Step 5: Solve for x
x = 170,296,201,837.44/393,412.80 - Step 6: Final answer
x = 432,868.99
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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.