Finding the Fourth Proportional to 812,346.55, 1,121,079.63 and 449,810.41
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Solution
The fourth proportional to 812,346.55, 1,121,079.63 and 449,810.41 is: 620,761.28
Step by Step Solution
- Step 1: Write the proportion equation
812,346.55 : 1,121,079.63 = 449,810.41 : x - Step 2: Convert to fraction form
812,346.55/1,121,079.63 = 449,810.41/x - Step 3: Cross multiply
812,346.55x = 1,121,079.63 × 449,810.41 - Step 4: Simplify right side
812,346.55x = 504,273,288,012.95 - Step 5: Solve for x
x = 504,273,288,012.95/812,346.55 - Step 6: Final answer
x = 620,761.28
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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.