Finding the Fourth Proportional to 687,853.75, 949,238.18 and 386,047.75
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Solution
The fourth proportional to 687,853.75, 949,238.18 and 386,047.75 is: 532,745.90
Step by Step Solution
- Step 1: Write the proportion equation
687,853.75 : 949,238.18 = 386,047.75 : x - Step 2: Convert to fraction form
687,853.75/949,238.18 = 386,047.75/x - Step 3: Cross multiply
687,853.75x = 949,238.18 × 386,047.75 - Step 4: Simplify right side
687,853.75x = 366,451,263,603.10 - Step 5: Solve for x
x = 366,451,263,603.10/687,853.75 - Step 6: Final answer
x = 532,745.90
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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.