Finding the Fourth Proportional to 821,907.21, 1,134,228.06 and 459,330.87
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Solution
The fourth proportional to 821,907.21, 1,134,228.06 and 459,330.87 is: 633,874.43
Step by Step Solution
- Step 1: Write the proportion equation
821,907.21 : 1,134,228.06 = 459,330.87 : x - Step 2: Convert to fraction form
821,907.21/1,134,228.06 = 459,330.87/x - Step 3: Cross multiply
821,907.21x = 1,134,228.06 × 459,330.87 - Step 4: Simplify right side
821,907.21x = 520,985,961,578.21 - Step 5: Solve for x
x = 520,985,961,578.21/821,907.21 - Step 6: Final answer
x = 633,874.43
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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.