Finding the Fourth Proportional to 517,811.87, 714,574.62 and 288,364.15
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Solution
The fourth proportional to 517,811.87, 714,574.62 and 288,364.15 is: 397,939.32
Step by Step Solution
- Step 1: Write the proportion equation
517,811.87 : 714,574.62 = 288,364.15 : x - Step 2: Convert to fraction form
517,811.87/714,574.62 = 288,364.15/x - Step 3: Cross multiply
517,811.87x = 714,574.62 × 288,364.15 - Step 4: Simplify right side
517,811.87x = 206,057,701,121.44 - Step 5: Solve for x
x = 206,057,701,121.44/517,811.87 - Step 6: Final answer
x = 397,939.32
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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.