Finding the Fourth Proportional to 812,509.79, 1,121,249.66 and 449,925.84
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Solution
The fourth proportional to 812,509.79, 1,121,249.66 and 449,925.84 is: 620,889.99
Step by Step Solution
- Step 1: Write the proportion equation
812,509.79 : 1,121,249.66 = 449,925.84 : x - Step 2: Convert to fraction form
812,509.79/1,121,249.66 = 449,925.84/x - Step 3: Cross multiply
812,509.79x = 1,121,249.66 × 449,925.84 - Step 4: Simplify right side
812,509.79x = 504,479,192,875.59 - Step 5: Solve for x
x = 504,479,192,875.59/812,509.79 - Step 6: Final answer
x = 620,889.99
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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.