Finding the Fourth Proportional to 812,113.74, 1,120,703.37 and 449,529.84
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Solution
The fourth proportional to 812,113.74, 1,120,703.37 and 449,529.84 is: 620,343.66
Step by Step Solution
- Step 1: Write the proportion equation
812,113.74 : 1,120,703.37 = 449,529.84 : x - Step 2: Convert to fraction form
812,113.74/1,120,703.37 = 449,529.84/x - Step 3: Cross multiply
812,113.74x = 1,120,703.37 × 449,529.84 - Step 4: Simplify right side
812,113.74x = 503,789,606,603.56 - Step 5: Solve for x
x = 503,789,606,603.56/812,113.74 - Step 6: Final answer
x = 620,343.66
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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.