Finding the Fourth Proportional to 814,920.70, 1,221,396.90 and 415,355.80
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Solution
The fourth proportional to 814,920.70, 1,221,396.90 and 415,355.80 is: 622,532.09
Step by Step Solution
- Step 1: Write the proportion equation
814,920.70 : 1,221,396.90 = 415,355.80 : x - Step 2: Convert to fraction form
814,920.70/1,221,396.90 = 415,355.80/x - Step 3: Cross multiply
814,920.70x = 1,221,396.90 × 415,355.80 - Step 4: Simplify right side
814,920.70x = 507,314,286,517.02 - Step 5: Solve for x
x = 507,314,286,517.02/814,920.70 - Step 6: Final answer
x = 622,532.09
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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.