Finding the Fourth Proportional to 1,212,603.40, 1,816,936.80 and 762,518.80
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Solution
The fourth proportional to 1,212,603.40, 1,816,936.80 and 762,518.80 is: 1,142,540.48
Step by Step Solution
- Step 1: Write the proportion equation
1,212,603.40 : 1,816,936.80 = 762,518.80 : x - Step 2: Convert to fraction form
1,212,603.40/1,816,936.80 = 762,518.80/x - Step 3: Cross multiply
1,212,603.40x = 1,816,936.80 × 762,518.80 - Step 4: Simplify right side
1,212,603.40x = 1,385,448,468,411.84 - Step 5: Solve for x
x = 1,385,448,468,411.84/1,212,603.40 - Step 6: Final answer
x = 1,142,540.48
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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.