Finding the Fourth Proportional to 921,399.17, 1,271,511.68 and 513,538.25
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Solution
The fourth proportional to 921,399.17, 1,271,511.68 and 513,538.25 is: 708,672.09
Step by Step Solution
- Step 1: Write the proportion equation
921,399.17 : 1,271,511.68 = 513,538.25 : x - Step 2: Convert to fraction form
921,399.17/1,271,511.68 = 513,538.25/x - Step 3: Cross multiply
921,399.17x = 1,271,511.68 × 513,538.25 - Step 4: Simplify right side
921,399.17x = 652,969,874,076.51 - Step 5: Solve for x
x = 652,969,874,076.51/921,399.17 - Step 6: Final answer
x = 708,672.09
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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.