Finding the Fourth Proportional to 1,283,997.25, 1,925,991.42 and 385,435.36
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Solution
The fourth proportional to 1,283,997.25, 1,925,991.42 and 385,435.36 is: 578,151.70
Step by Step Solution
- Step 1: Write the proportion equation
1,283,997.25 : 1,925,991.42 = 385,435.36 : x - Step 2: Convert to fraction form
1,283,997.25/1,925,991.42 = 385,435.36/x - Step 3: Cross multiply
1,283,997.25x = 1,925,991.42 × 385,435.36 - Step 4: Simplify right side
1,283,997.25x = 742,345,196,324.61 - Step 5: Solve for x
x = 742,345,196,324.61/1,283,997.25 - Step 6: Final answer
x = 578,151.70
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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.