Finding the Fourth Proportional to 515,472.93, 711,318.46 and 286,015.67
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Solution
The fourth proportional to 515,472.93, 711,318.46 and 286,015.67 is: 394,682.66
Step by Step Solution
- Step 1: Write the proportion equation
515,472.93 : 711,318.46 = 286,015.67 : x - Step 2: Convert to fraction form
515,472.93/711,318.46 = 286,015.67/x - Step 3: Cross multiply
515,472.93x = 711,318.46 × 286,015.67 - Step 4: Simplify right side
515,472.93x = 203,448,226,983.53 - Step 5: Solve for x
x = 203,448,226,983.53/515,472.93 - Step 6: Final answer
x = 394,682.66
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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.