Finding the Fourth Proportional to 1,306,486.36, 1,959,728.79 and 408,005.08
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Solution
The fourth proportional to 1,306,486.36, 1,959,728.79 and 408,005.08 is: 612,007.39
Step by Step Solution
- Step 1: Write the proportion equation
1,306,486.36 : 1,959,728.79 = 408,005.08 : x - Step 2: Convert to fraction form
1,306,486.36/1,959,728.79 = 408,005.08/x - Step 3: Cross multiply
1,306,486.36x = 1,959,728.79 × 408,005.08 - Step 4: Simplify right side
1,306,486.36x = 799,579,301,742.25 - Step 5: Solve for x
x = 799,579,301,742.25/1,306,486.36 - Step 6: Final answer
x = 612,007.39
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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.