Finding the Fourth Proportional to 642,643.12, 886,644.87 and 370,674.55
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Solution
The fourth proportional to 642,643.12, 886,644.87 and 370,674.55 is: 511,414.00
Step by Step Solution
- Step 1: Write the proportion equation
642,643.12 : 886,644.87 = 370,674.55 : x - Step 2: Convert to fraction form
642,643.12/886,644.87 = 370,674.55/x - Step 3: Cross multiply
642,643.12x = 886,644.87 × 370,674.55 - Step 4: Simplify right side
642,643.12x = 328,656,688,197.06 - Step 5: Solve for x
x = 328,656,688,197.06/642,643.12 - Step 6: Final answer
x = 511,414.00
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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.