Finding the Fourth Proportional to 811,777.63, 1,120,029.74 and 505,903.63
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Solution
The fourth proportional to 811,777.63, 1,120,029.74 and 505,903.63 is: 698,007.79
Step by Step Solution
- Step 1: Write the proportion equation
811,777.63 : 1,120,029.74 = 505,903.63 : x - Step 2: Convert to fraction form
811,777.63/1,120,029.74 = 505,903.63/x - Step 3: Cross multiply
811,777.63x = 1,120,029.74 × 505,903.63 - Step 4: Simplify right side
811,777.63x = 566,627,108,644.44 - Step 5: Solve for x
x = 566,627,108,644.44/811,777.63 - Step 6: Final answer
x = 698,007.79
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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.