Finding the Fourth Proportional to 812,882.81, 1,121,549.22 and 468,691.68
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Solution
The fourth proportional to 812,882.81, 1,121,549.22 and 468,691.68 is: 646,662.45
Step by Step Solution
- Step 1: Write the proportion equation
812,882.81 : 1,121,549.22 = 468,691.68 : x - Step 2: Convert to fraction form
812,882.81/1,121,549.22 = 468,691.68/x - Step 3: Cross multiply
812,882.81x = 1,121,549.22 × 468,691.68 - Step 4: Simplify right side
812,882.81x = 525,660,788,124.49 - Step 5: Solve for x
x = 525,660,788,124.49/812,882.81 - Step 6: Final answer
x = 646,662.45
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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.