Finding the Fourth Proportional to 867,728.30, 1,302,432.04 and 418,765.20
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Solution
The fourth proportional to 867,728.30, 1,302,432.04 and 418,765.20 is: 628,552.99
Step by Step Solution
- Step 1: Write the proportion equation
867,728.30 : 1,302,432.04 = 418,765.20 : x - Step 2: Convert to fraction form
867,728.30/1,302,432.04 = 418,765.20/x - Step 3: Cross multiply
867,728.30x = 1,302,432.04 × 418,765.20 - Step 4: Simplify right side
867,728.30x = 545,413,213,717.01 - Step 5: Solve for x
x = 545,413,213,717.01/867,728.30 - Step 6: Final answer
x = 628,552.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.