Finding the Fourth Proportional to 642,644.16, 886,848.99 and 356,182.70
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Solution
The fourth proportional to 642,644.16, 886,848.99 and 356,182.70 is: 491,532.15
Step by Step Solution
- Step 1: Write the proportion equation
642,644.16 : 886,848.99 = 356,182.70 : x - Step 2: Convert to fraction form
642,644.16/886,848.99 = 356,182.70/x - Step 3: Cross multiply
642,644.16x = 886,848.99 × 356,182.70 - Step 4: Simplify right side
642,644.16x = 315,880,267,750.47 - Step 5: Solve for x
x = 315,880,267,750.47/642,644.16 - Step 6: Final answer
x = 491,532.15
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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.