Finding the Fourth Proportional to 1,243,816.29, 1,865,734.88 and 345,328.09
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Solution
The fourth proportional to 1,243,816.29, 1,865,734.88 and 345,328.09 is: 517,995.03
Step by Step Solution
- Step 1: Write the proportion equation
1,243,816.29 : 1,865,734.88 = 345,328.09 : x - Step 2: Convert to fraction form
1,243,816.29/1,865,734.88 = 345,328.09/x - Step 3: Cross multiply
1,243,816.29x = 1,865,734.88 × 345,328.09 - Step 4: Simplify right side
1,243,816.29x = 644,290,662,556.78 - Step 5: Solve for x
x = 644,290,662,556.78/1,243,816.29 - Step 6: Final answer
x = 517,995.03
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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.