Finding the Fourth Proportional to 725,409.49, 1,088,954.91 and 389,107.01
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Solution
The fourth proportional to 725,409.49, 1,088,954.91 and 389,107.01 is: 584,111.45
Step by Step Solution
- Step 1: Write the proportion equation
725,409.49 : 1,088,954.91 = 389,107.01 : x - Step 2: Convert to fraction form
725,409.49/1,088,954.91 = 389,107.01/x - Step 3: Cross multiply
725,409.49x = 1,088,954.91 × 389,107.01 - Step 4: Simplify right side
725,409.49x = 423,719,989,054.92 - Step 5: Solve for x
x = 423,719,989,054.92/725,409.49 - Step 6: Final answer
x = 584,111.45
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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.