Finding the Fourth Proportional to 931,839.13, 1,397,789.67 and 257,864.05
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Solution
The fourth proportional to 931,839.13, 1,397,789.67 and 257,864.05 is: 386,804.65
Step by Step Solution
- Step 1: Write the proportion equation
931,839.13 : 1,397,789.67 = 257,864.05 : x - Step 2: Convert to fraction form
931,839.13/1,397,789.67 = 257,864.05/x - Step 3: Cross multiply
931,839.13x = 1,397,789.67 × 257,864.05 - Step 4: Simplify right side
931,839.13x = 360,439,705,354.36 - Step 5: Solve for x
x = 360,439,705,354.36/931,839.13 - Step 6: Final answer
x = 386,804.65
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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.