Finding the Fourth Proportional to 515,895.18, 711,936.81 and 286,452.96
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Solution
The fourth proportional to 515,895.18, 711,936.81 and 286,452.96 is: 395,305.90
Step by Step Solution
- Step 1: Write the proportion equation
515,895.18 : 711,936.81 = 286,452.96 : x - Step 2: Convert to fraction form
515,895.18/711,936.81 = 286,452.96/x - Step 3: Cross multiply
515,895.18x = 711,936.81 × 286,452.96 - Step 4: Simplify right side
515,895.18x = 203,936,406,557.46 - Step 5: Solve for x
x = 203,936,406,557.46/515,895.18 - Step 6: Final answer
x = 395,305.90
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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.