Finding the Fourth Proportional to 819,205.87, 1,130,988.99 and 728,310.78
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Solution
The fourth proportional to 819,205.87, 1,130,988.99 and 728,310.78 is: 1,005,499.96
Step by Step Solution
- Step 1: Write the proportion equation
819,205.87 : 1,130,988.99 = 728,310.78 : x - Step 2: Convert to fraction form
819,205.87/1,130,988.99 = 728,310.78/x - Step 3: Cross multiply
819,205.87x = 1,130,988.99 × 728,310.78 - Step 4: Simplify right side
819,205.87x = 823,711,473,478.31 - Step 5: Solve for x
x = 823,711,473,478.31/819,205.87 - Step 6: Final answer
x = 1,005,499.96
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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.