Finding the Fourth Proportional to 715,079.07, 986,949.81 and 405,037.08
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Solution
The fourth proportional to 715,079.07, 986,949.81 and 405,037.08 is: 559,030.86
Step by Step Solution
- Step 1: Write the proportion equation
715,079.07 : 986,949.81 = 405,037.08 : x - Step 2: Convert to fraction form
715,079.07/986,949.81 = 405,037.08/x - Step 3: Cross multiply
715,079.07x = 986,949.81 × 405,037.08 - Step 4: Simplify right side
715,079.07x = 399,751,269,148.96 - Step 5: Solve for x
x = 399,751,269,148.96/715,079.07 - Step 6: Final answer
x = 559,030.86
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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.