Finding the Fourth Proportional to 515,672.48, 711,616.99 and 286,216.38
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Solution
The fourth proportional to 515,672.48, 711,616.99 and 286,216.38 is: 394,972.49
Step by Step Solution
- Step 1: Write the proportion equation
515,672.48 : 711,616.99 = 286,216.38 : x - Step 2: Convert to fraction form
515,672.48/711,616.99 = 286,216.38/x - Step 3: Cross multiply
515,672.48x = 711,616.99 × 286,216.38 - Step 4: Simplify right side
515,672.48x = 203,676,440,777.32 - Step 5: Solve for x
x = 203,676,440,777.32/515,672.48 - Step 6: Final answer
x = 394,972.49
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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.