Finding the Fourth Proportional to 879,130.92, 1,213,142.76 and 491,880.72
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Solution
The fourth proportional to 879,130.92, 1,213,142.76 and 491,880.72 is: 678,762.99
Step by Step Solution
- Step 1: Write the proportion equation
879,130.92 : 1,213,142.76 = 491,880.72 : x - Step 2: Convert to fraction form
879,130.92/1,213,142.76 = 491,880.72/x - Step 3: Cross multiply
879,130.92x = 1,213,142.76 × 491,880.72 - Step 4: Simplify right side
879,130.92x = 596,721,534,251.59 - Step 5: Solve for x
x = 596,721,534,251.59/879,130.92 - Step 6: Final answer
x = 678,762.99
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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.