Finding the Fourth Proportional to 838,431.10, 1,157,055.72 and 456,478.84
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Solution
The fourth proportional to 838,431.10, 1,157,055.72 and 456,478.84 is: 629,952.12
Step by Step Solution
- Step 1: Write the proportion equation
838,431.10 : 1,157,055.72 = 456,478.84 : x - Step 2: Convert to fraction form
838,431.10/1,157,055.72 = 456,478.84/x - Step 3: Cross multiply
838,431.10x = 1,157,055.72 × 456,478.84 - Step 4: Simplify right side
838,431.10x = 528,171,452,880.97 - Step 5: Solve for x
x = 528,171,452,880.97/838,431.10 - Step 6: Final answer
x = 629,952.12
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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.