Finding the Fourth Proportional to 813,688.84, 1,122,957.12 and 451,226.40
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Solution
The fourth proportional to 813,688.84, 1,122,957.12 and 451,226.40 is: 622,729.32
Step by Step Solution
- Step 1: Write the proportion equation
813,688.84 : 1,122,957.12 = 451,226.40 : x - Step 2: Convert to fraction form
813,688.84/1,122,957.12 = 451,226.40/x - Step 3: Cross multiply
813,688.84x = 1,122,957.12 × 451,226.40 - Step 4: Simplify right side
813,688.84x = 506,707,898,611.97 - Step 5: Solve for x
x = 506,707,898,611.97/813,688.84 - Step 6: Final answer
x = 622,729.32
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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.