Finding the Fourth Proportional to 1,214,136.40, 1,821,204.60 and 763,395.70
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Solution
The fourth proportional to 1,214,136.40, 1,821,204.60 and 763,395.70 is: 1,145,093.55
Step by Step Solution
- Step 1: Write the proportion equation
1,214,136.40 : 1,821,204.60 = 763,395.70 : x - Step 2: Convert to fraction form
1,214,136.40/1,821,204.60 = 763,395.70/x - Step 3: Cross multiply
1,214,136.40x = 1,821,204.60 × 763,395.70 - Step 4: Simplify right side
1,214,136.40x = 1,390,299,760,460.22 - Step 5: Solve for x
x = 1,390,299,760,460.22/1,214,136.40 - Step 6: Final answer
x = 1,145,093.55
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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.