Finding the Fourth Proportional to 812,485.92, 1,121,216.78 and 449,901.99
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Solution
The fourth proportional to 812,485.92, 1,121,216.78 and 449,901.99 is: 620,857.11
Step by Step Solution
- Step 1: Write the proportion equation
812,485.92 : 1,121,216.78 = 449,901.99 : x - Step 2: Convert to fraction form
812,485.92/1,121,216.78 = 449,901.99/x - Step 3: Cross multiply
812,485.92x = 1,121,216.78 × 449,901.99 - Step 4: Simplify right side
812,485.92x = 504,437,658,293.88 - Step 5: Solve for x
x = 504,437,658,293.88/812,485.92 - Step 6: Final answer
x = 620,857.11
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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.