Finding the Fourth Proportional to 2,231,396.16, 3,079,337.76 and 1,212,820.80
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Solution
The fourth proportional to 2,231,396.16, 3,079,337.76 and 1,212,820.80 is: 1,673,698.71
Step by Step Solution
- Step 1: Write the proportion equation
2,231,396.16 : 3,079,337.76 = 1,212,820.80 : x - Step 2: Convert to fraction form
2,231,396.16/3,079,337.76 = 1,212,820.80/x - Step 3: Cross multiply
2,231,396.16x = 3,079,337.76 × 1,212,820.80 - Step 4: Simplify right side
2,231,396.16x = 3,734,684,885,553.41 - Step 5: Solve for x
x = 3,734,684,885,553.41/2,231,396.16 - Step 6: Final answer
x = 1,673,698.71
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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.