Finding the Fourth Proportional to 678,803.86, 1,018,426.92 and 323,771.68
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Solution
The fourth proportional to 678,803.86, 1,018,426.92 and 323,771.68 is: 485,762.99
Step by Step Solution
- Step 1: Write the proportion equation
678,803.86 : 1,018,426.92 = 323,771.68 : x - Step 2: Convert to fraction form
678,803.86/1,018,426.92 = 323,771.68/x - Step 3: Cross multiply
678,803.86x = 1,018,426.92 × 323,771.68 - Step 4: Simplify right side
678,803.86x = 329,737,794,845.63 - Step 5: Solve for x
x = 329,737,794,845.63/678,803.86 - Step 6: Final answer
x = 485,762.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.