Finding the Fourth Proportional to 715,630.96, 987,572.15 and 388,945.81
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Solution
The fourth proportional to 715,630.96, 987,572.15 and 388,945.81 is: 536,745.99
Step by Step Solution
- Step 1: Write the proportion equation
715,630.96 : 987,572.15 = 388,945.81 : x - Step 2: Convert to fraction form
715,630.96/987,572.15 = 388,945.81/x - Step 3: Cross multiply
715,630.96x = 987,572.15 × 388,945.81 - Step 4: Simplify right side
715,630.96x = 384,112,049,815.19 - Step 5: Solve for x
x = 384,112,049,815.19/715,630.96 - Step 6: Final answer
x = 536,745.99
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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.