Finding the Fourth Proportional to 723,713.06, 998,724.84 and 421,965.38
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Solution
The fourth proportional to 723,713.06, 998,724.84 and 421,965.38 is: 582,312.70
Step by Step Solution
- Step 1: Write the proportion equation
723,713.06 : 998,724.84 = 421,965.38 : x - Step 2: Convert to fraction form
723,713.06/998,724.84 = 421,965.38/x - Step 3: Cross multiply
723,713.06x = 998,724.84 × 421,965.38 - Step 4: Simplify right side
723,713.06x = 421,427,307,540.48 - Step 5: Solve for x
x = 421,427,307,540.48/723,713.06 - Step 6: Final answer
x = 582,312.70
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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.