Finding the Fourth Proportional to 518,087.10, 714,911.36 and 288,620.99
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Solution
The fourth proportional to 518,087.10, 714,911.36 and 288,620.99 is: 398,269.75
Step by Step Solution
- Step 1: Write the proportion equation
518,087.10 : 714,911.36 = 288,620.99 : x - Step 2: Convert to fraction form
518,087.10/714,911.36 = 288,620.99/x - Step 3: Cross multiply
518,087.10x = 714,911.36 × 288,620.99 - Step 4: Simplify right side
518,087.10x = 206,338,419,467.79 - Step 5: Solve for x
x = 206,338,419,467.79/518,087.10 - Step 6: Final answer
x = 398,269.75
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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.