Finding the Fourth Proportional to 867,112.14, 1,300,553.13 and 393,688.62
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Solution
The fourth proportional to 867,112.14, 1,300,553.13 and 393,688.62 is: 590,480.68
Step by Step Solution
- Step 1: Write the proportion equation
867,112.14 : 1,300,553.13 = 393,688.62 : x - Step 2: Convert to fraction form
867,112.14/1,300,553.13 = 393,688.62/x - Step 3: Cross multiply
867,112.14x = 1,300,553.13 × 393,688.62 - Step 4: Simplify right side
867,112.14x = 512,012,966,986.38 - Step 5: Solve for x
x = 512,012,966,986.38/867,112.14 - Step 6: Final answer
x = 590,480.68
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1.5x scale
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.