Finding the Fourth Proportional to 812,465.99, 1,121,189.29 and 449,882.05
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Solution
The fourth proportional to 812,465.99, 1,121,189.29 and 449,882.05 is: 620,829.60
Step by Step Solution
- Step 1: Write the proportion equation
812,465.99 : 1,121,189.29 = 449,882.05 : x - Step 2: Convert to fraction form
812,465.99/1,121,189.29 = 449,882.05/x - Step 3: Cross multiply
812,465.99x = 1,121,189.29 × 449,882.05 - Step 4: Simplify right side
812,465.99x = 504,402,936,928.38 - Step 5: Solve for x
x = 504,402,936,928.38/812,465.99 - Step 6: Final answer
x = 620,829.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.