Finding the Fourth Proportional to 725,409.74, 1,088,955.29 and 389,107.26
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Solution
The fourth proportional to 725,409.74, 1,088,955.29 and 389,107.26 is: 584,111.83
Step by Step Solution
- Step 1: Write the proportion equation
725,409.74 : 1,088,955.29 = 389,107.26 : x - Step 2: Convert to fraction form
725,409.74/1,088,955.29 = 389,107.26/x - Step 3: Cross multiply
725,409.74x = 1,088,955.29 × 389,107.26 - Step 4: Simplify right side
725,409.74x = 423,720,409,154.41 - Step 5: Solve for x
x = 423,720,409,154.41/725,409.74 - Step 6: Final answer
x = 584,111.83
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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.