Finding the Fourth Proportional to 810,711.30, 1,118,761.86 and 448,125.80
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Solution
The fourth proportional to 810,711.30, 1,118,761.86 and 448,125.80 is: 618,402.70
Step by Step Solution
- Step 1: Write the proportion equation
810,711.30 : 1,118,761.86 = 448,125.80 : x - Step 2: Convert to fraction form
810,711.30/1,118,761.86 = 448,125.80/x - Step 3: Cross multiply
810,711.30x = 1,118,761.86 × 448,125.80 - Step 4: Simplify right side
810,711.30x = 501,346,053,521.99 - Step 5: Solve for x
x = 501,346,053,521.99/810,711.30 - Step 6: Final answer
x = 618,402.70
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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.