Finding the Fourth Proportional to 986,387.25, 1,479,456.13 and 312,536.91
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Solution
The fourth proportional to 986,387.25, 1,479,456.13 and 312,536.91 is: 468,765.83
Step by Step Solution
- Step 1: Write the proportion equation
986,387.25 : 1,479,456.13 = 312,536.91 : x - Step 2: Convert to fraction form
986,387.25/1,479,456.13 = 312,536.91/x - Step 3: Cross multiply
986,387.25x = 1,479,456.13 × 312,536.91 - Step 4: Simplify right side
986,387.25x = 462,384,639,172.14 - Step 5: Solve for x
x = 462,384,639,172.14/986,387.25 - Step 6: Final answer
x = 468,765.83
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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.