Finding the Fourth Proportional to 857,890.08, 1,285,998.36 and 408,490.20
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Solution
The fourth proportional to 857,890.08, 1,285,998.36 and 408,490.20 is: 612,336.87
Step by Step Solution
- Step 1: Write the proportion equation
857,890.08 : 1,285,998.36 = 408,490.20 : x - Step 2: Convert to fraction form
857,890.08/1,285,998.36 = 408,490.20/x - Step 3: Cross multiply
857,890.08x = 1,285,998.36 × 408,490.20 - Step 4: Simplify right side
857,890.08x = 525,317,727,276.07 - Step 5: Solve for x
x = 525,317,727,276.07/857,890.08 - Step 6: Final answer
x = 612,336.87
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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.