Finding the Fourth Proportional to 742,640.62, 1,112,963.11 and 405,175.59
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Solution
The fourth proportional to 742,640.62, 1,112,963.11 and 405,175.59 is: 607,218.99
Step by Step Solution
- Step 1: Write the proportion equation
742,640.62 : 1,112,963.11 = 405,175.59 : x - Step 2: Convert to fraction form
742,640.62/1,112,963.11 = 405,175.59/x - Step 3: Cross multiply
742,640.62x = 1,112,963.11 × 405,175.59 - Step 4: Simplify right side
742,640.62x = 450,945,484,742.49 - Step 5: Solve for x
x = 450,945,484,742.49/742,640.62 - Step 6: Final answer
x = 607,218.99
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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.