Finding the Fourth Proportional to 515,958.63, 711,998.94 and 286,530.48
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Solution
The fourth proportional to 515,958.63, 711,998.94 and 286,530.48 is: 395,398.75
Step by Step Solution
- Step 1: Write the proportion equation
515,958.63 : 711,998.94 = 286,530.48 : x - Step 2: Convert to fraction form
515,958.63/711,998.94 = 286,530.48/x - Step 3: Cross multiply
515,958.63x = 711,998.94 × 286,530.48 - Step 4: Simplify right side
515,958.63x = 204,009,398,037.69 - Step 5: Solve for x
x = 204,009,398,037.69/515,958.63 - Step 6: Final answer
x = 395,398.75
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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.