Finding the Fourth Proportional to 2,230,709.20, 3,078,398.19 and 1,212,113.95
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Solution
The fourth proportional to 2,230,709.20, 3,078,398.19 and 1,212,113.95 is: 1,672,727.84
Step by Step Solution
- Step 1: Write the proportion equation
2,230,709.20 : 3,078,398.19 = 1,212,113.95 : x - Step 2: Convert to fraction form
2,230,709.20/3,078,398.19 = 1,212,113.95/x - Step 3: Cross multiply
2,230,709.20x = 3,078,398.19 × 1,212,113.95 - Step 4: Simplify right side
2,230,709.20x = 3,731,369,389,753.75 - Step 5: Solve for x
x = 3,731,369,389,753.75/2,230,709.20 - Step 6: Final answer
x = 1,672,727.84
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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.