Finding the Fourth Proportional to 720,415.76, 1,080,623.63 and 271,237.40
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Solution
The fourth proportional to 720,415.76, 1,080,623.63 and 271,237.40 is: 406,856.09
Step by Step Solution
- Step 1: Write the proportion equation
720,415.76 : 1,080,623.63 = 271,237.40 : x - Step 2: Convert to fraction form
720,415.76/1,080,623.63 = 271,237.40/x - Step 3: Cross multiply
720,415.76x = 1,080,623.63 × 271,237.40 - Step 4: Simplify right side
720,415.76x = 293,105,537,020.46 - Step 5: Solve for x
x = 293,105,537,020.46/720,415.76 - Step 6: Final answer
x = 406,856.09
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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.