Finding the Fourth Proportional to 724,808.20, 1,087,212.30 and 659,489.80
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Solution
The fourth proportional to 724,808.20, 1,087,212.30 and 659,489.80 is: 989,234.70
Step by Step Solution
- Step 1: Write the proportion equation
724,808.20 : 1,087,212.30 = 659,489.80 : x - Step 2: Convert to fraction form
724,808.20/1,087,212.30 = 659,489.80/x - Step 3: Cross multiply
724,808.20x = 1,087,212.30 × 659,489.80 - Step 4: Simplify right side
724,808.20x = 717,005,422,284.54 - Step 5: Solve for x
x = 717,005,422,284.54/724,808.20 - Step 6: Final answer
x = 989,234.70
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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.