Finding the Fourth Proportional to 857,849.63, 1,285,937.64 and 408,449.75
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Solution
The fourth proportional to 857,849.63, 1,285,937.64 and 408,449.75 is: 612,276.19
Step by Step Solution
- Step 1: Write the proportion equation
857,849.63 : 1,285,937.64 = 408,449.75 : x - Step 2: Convert to fraction form
857,849.63/1,285,937.64 = 408,449.75/x - Step 3: Cross multiply
857,849.63x = 1,285,937.64 × 408,449.75 - Step 4: Simplify right side
857,849.63x = 525,240,901,143.90 - Step 5: Solve for x
x = 525,240,901,143.90/857,849.63 - Step 6: Final answer
x = 612,276.19
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.