Finding the Fourth Proportional to 518,961.91, 777,400.74 and 258,515.07
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Solution
The fourth proportional to 518,961.91, 777,400.74 and 258,515.07 is: 387,253.48
Step by Step Solution
- Step 1: Write the proportion equation
518,961.91 : 777,400.74 = 258,515.07 : x - Step 2: Convert to fraction form
518,961.91/777,400.74 = 258,515.07/x - Step 3: Cross multiply
518,961.91x = 777,400.74 × 258,515.07 - Step 4: Simplify right side
518,961.91x = 200,969,806,719.15 - Step 5: Solve for x
x = 200,969,806,719.15/518,961.91 - Step 6: Final answer
x = 387,253.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.