Finding the Fourth Proportional to 515,522.10, 711,418.96 and 286,113.94
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Solution
The fourth proportional to 515,522.10, 711,418.96 and 286,113.94 is: 394,836.38
Step by Step Solution
- Step 1: Write the proportion equation
515,522.10 : 711,418.96 = 286,113.94 : x - Step 2: Convert to fraction form
515,522.10/711,418.96 = 286,113.94/x - Step 3: Cross multiply
515,522.10x = 711,418.96 × 286,113.94 - Step 4: Simplify right side
515,522.10x = 203,546,881,636.30 - Step 5: Solve for x
x = 203,546,881,636.30/515,522.10 - Step 6: Final answer
x = 394,836.38
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1.5x scale
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.