Finding the Fourth Proportional to 812,464.74, 1,121,187.59 and 449,880.81
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Solution
The fourth proportional to 812,464.74, 1,121,187.59 and 449,880.81 is: 620,827.90
Step by Step Solution
- Step 1: Write the proportion equation
812,464.74 : 1,121,187.59 = 449,880.81 : x - Step 2: Convert to fraction form
812,464.74/1,121,187.59 = 449,880.81/x - Step 3: Cross multiply
812,464.74x = 1,121,187.59 × 449,880.81 - Step 4: Simplify right side
812,464.74x = 504,400,778,901.74 - Step 5: Solve for x
x = 504,400,778,901.74/812,464.74 - Step 6: Final answer
x = 620,827.90
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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.