Finding the Fourth Proportional to 645,761.68, 891,137.20 and 373,841.08
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Solution
The fourth proportional to 645,761.68, 891,137.20 and 373,841.08 is: 515,892.63
Step by Step Solution
- Step 1: Write the proportion equation
645,761.68 : 891,137.20 = 373,841.08 : x - Step 2: Convert to fraction form
645,761.68/891,137.20 = 373,841.08/x - Step 3: Cross multiply
645,761.68x = 891,137.20 × 373,841.08 - Step 4: Simplify right side
645,761.68x = 333,143,693,276.18 - Step 5: Solve for x
x = 333,143,693,276.18/645,761.68 - Step 6: Final answer
x = 515,892.63
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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.