Finding the Fourth Proportional to 818,243.56, 1,129,144.62 and 455,682.70
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Solution
The fourth proportional to 818,243.56, 1,129,144.62 and 455,682.70 is: 628,824.59
Step by Step Solution
- Step 1: Write the proportion equation
818,243.56 : 1,129,144.62 = 455,682.70 : x - Step 2: Convert to fraction form
818,243.56/1,129,144.62 = 455,682.70/x - Step 3: Cross multiply
818,243.56x = 1,129,144.62 × 455,682.70 - Step 4: Simplify right side
818,243.56x = 514,531,669,132.07 - Step 5: Solve for x
x = 514,531,669,132.07/818,243.56 - Step 6: Final answer
x = 628,824.59
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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.