Finding the Fourth Proportional to 720,886.10, 994,782.65 and 398,576.84
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Solution
The fourth proportional to 720,886.10, 994,782.65 and 398,576.84 is: 550,013.82
Step by Step Solution
- Step 1: Write the proportion equation
720,886.10 : 994,782.65 = 398,576.84 : x - Step 2: Convert to fraction form
720,886.10/994,782.65 = 398,576.84/x - Step 3: Cross multiply
720,886.10x = 994,782.65 × 398,576.84 - Step 4: Simplify right side
720,886.10x = 396,497,318,157.03 - Step 5: Solve for x
x = 396,497,318,157.03/720,886.10 - Step 6: Final answer
x = 550,013.82
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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.