Finding the Fourth Proportional to 820,078.18, 1,131,708.36 and 457,502.02
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Solution
The fourth proportional to 820,078.18, 1,131,708.36 and 457,502.02 is: 631,353.05
Step by Step Solution
- Step 1: Write the proportion equation
820,078.18 : 1,131,708.36 = 457,502.02 : x - Step 2: Convert to fraction form
820,078.18/1,131,708.36 = 457,502.02/x - Step 3: Cross multiply
820,078.18x = 1,131,708.36 × 457,502.02 - Step 4: Simplify right side
820,078.18x = 517,758,860,750.89 - Step 5: Solve for x
x = 517,758,860,750.89/820,078.18 - Step 6: Final answer
x = 631,353.05
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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.