Finding the Fourth Proportional to 1,311,115.65, 1,966,486.62 and 412,534.05
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Solution
The fourth proportional to 1,311,115.65, 1,966,486.62 and 412,534.05 is: 618,742.28
Step by Step Solution
- Step 1: Write the proportion equation
1,311,115.65 : 1,966,486.62 = 412,534.05 : x - Step 2: Convert to fraction form
1,311,115.65/1,966,486.62 = 412,534.05/x - Step 3: Cross multiply
1,311,115.65x = 1,966,486.62 × 412,534.05 - Step 4: Simplify right side
1,311,115.65x = 811,242,683,792.09 - Step 5: Solve for x
x = 811,242,683,792.09/1,311,115.65 - Step 6: Final answer
x = 618,742.28
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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.