Finding the Fourth Proportional to 878,697.66, 1,212,860.55 and 511,261.26
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Solution
The fourth proportional to 878,697.66, 1,212,860.55 and 511,261.26 is: 705,690.52
Step by Step Solution
- Step 1: Write the proportion equation
878,697.66 : 1,212,860.55 = 511,261.26 : x - Step 2: Convert to fraction form
878,697.66/1,212,860.55 = 511,261.26/x - Step 3: Cross multiply
878,697.66x = 1,212,860.55 × 511,261.26 - Step 4: Simplify right side
878,697.66x = 620,088,612,997.29 - Step 5: Solve for x
x = 620,088,612,997.29/878,697.66 - Step 6: Final answer
x = 705,690.52
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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.