Finding the Fourth Proportional to 819,708.29, 1,131,195.21 and 457,132.54
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Solution
The fourth proportional to 819,708.29, 1,131,195.21 and 457,132.54 is: 630,841.66
Step by Step Solution
- Step 1: Write the proportion equation
819,708.29 : 1,131,195.21 = 457,132.54 : x - Step 2: Convert to fraction form
819,708.29/1,131,195.21 = 457,132.54/x - Step 3: Cross multiply
819,708.29x = 1,131,195.21 × 457,132.54 - Step 4: Simplify right side
819,708.29x = 517,106,139,583.13 - Step 5: Solve for x
x = 517,106,139,583.13/819,708.29 - Step 6: Final answer
x = 630,841.66
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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.