Finding the Fourth Proportional to 1,216,979.40, 1,825,296.30 and 418,297.80
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Solution
The fourth proportional to 1,216,979.40, 1,825,296.30 and 418,297.80 is: 627,387.31
Step by Step Solution
- Step 1: Write the proportion equation
1,216,979.40 : 1,825,296.30 = 418,297.80 : x - Step 2: Convert to fraction form
1,216,979.40/1,825,296.30 = 418,297.80/x - Step 3: Cross multiply
1,216,979.40x = 1,825,296.30 × 418,297.80 - Step 4: Simplify right side
1,216,979.40x = 763,517,426,638.14 - Step 5: Solve for x
x = 763,517,426,638.14/1,216,979.40 - Step 6: Final answer
x = 627,387.31
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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.