Finding the Fourth Proportional to 515,857.59, 711,886.28 and 286,418.43
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Solution
The fourth proportional to 515,857.59, 711,886.28 and 286,418.43 is: 395,258.99
Step by Step Solution
- Step 1: Write the proportion equation
515,857.59 : 711,886.28 = 286,418.43 : x - Step 2: Convert to fraction form
515,857.59/711,886.28 = 286,418.43/x - Step 3: Cross multiply
515,857.59x = 711,886.28 × 286,418.43 - Step 4: Simplify right side
515,857.59x = 203,897,349,224.05 - Step 5: Solve for x
x = 203,897,349,224.05/515,857.59 - Step 6: Final answer
x = 395,258.99
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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.