Finding the Fourth Proportional to 720,113.80, 1,080,170.70 and 580,145.80
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Solution
The fourth proportional to 720,113.80, 1,080,170.70 and 580,145.80 is: 870,218.70
Step by Step Solution
- Step 1: Write the proportion equation
720,113.80 : 1,080,170.70 = 580,145.80 : x - Step 2: Convert to fraction form
720,113.80/1,080,170.70 = 580,145.80/x - Step 3: Cross multiply
720,113.80x = 1,080,170.70 × 580,145.80 - Step 4: Simplify right side
720,113.80x = 626,656,494,888.06 - Step 5: Solve for x
x = 626,656,494,888.06/720,113.80 - Step 6: Final answer
x = 870,218.70
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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.