Finding the Fourth Proportional to 725,021.80, 1,087,532.70 and 305,117.80
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Solution
The fourth proportional to 725,021.80, 1,087,532.70 and 305,117.80 is: 457,676.70
Step by Step Solution
- Step 1: Write the proportion equation
725,021.80 : 1,087,532.70 = 305,117.80 : x - Step 2: Convert to fraction form
725,021.80/1,087,532.70 = 305,117.80/x - Step 3: Cross multiply
725,021.80x = 1,087,532.70 × 305,117.80 - Step 4: Simplify right side
725,021.80x = 331,825,584,852.06 - Step 5: Solve for x
x = 331,825,584,852.06/725,021.80 - Step 6: Final answer
x = 457,676.70
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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.