Finding the Fourth Proportional to 814,207.20, 1,221,310.80 and 739,411.80
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Solution
The fourth proportional to 814,207.20, 1,221,310.80 and 739,411.80 is: 1,109,117.70
Step by Step Solution
- Step 1: Write the proportion equation
814,207.20 : 1,221,310.80 = 739,411.80 : x - Step 2: Convert to fraction form
814,207.20/1,221,310.80 = 739,411.80/x - Step 3: Cross multiply
814,207.20x = 1,221,310.80 × 739,411.80 - Step 4: Simplify right side
814,207.20x = 903,051,616,987.44 - Step 5: Solve for x
x = 903,051,616,987.44/814,207.20 - Step 6: Final answer
x = 1,109,117.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.