Finding the Fourth Proportional to 2,215,988.13, 3,059,486.82 and 1,390,193.85
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Solution
The fourth proportional to 2,215,988.13, 3,059,486.82 and 1,390,193.85 is: 1,919,360.35
Step by Step Solution
- Step 1: Write the proportion equation
2,215,988.13 : 3,059,486.82 = 1,390,193.85 : x - Step 2: Convert to fraction form
2,215,988.13/3,059,486.82 = 1,390,193.85/x - Step 3: Cross multiply
2,215,988.13x = 3,059,486.82 × 1,390,193.85 - Step 4: Simplify right side
2,215,988.13x = 4,253,279,761,320.06 - Step 5: Solve for x
x = 4,253,279,761,320.06/2,215,988.13 - Step 6: Final answer
x = 1,919,360.35
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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.