Finding the Fourth Proportional to 391,321.45, 586,905.18 and 125,010.19
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Solution
The fourth proportional to 391,321.45, 586,905.18 and 125,010.19 is: 187,490.69
Step by Step Solution
- Step 1: Write the proportion equation
391,321.45 : 586,905.18 = 125,010.19 : x - Step 2: Convert to fraction form
391,321.45/586,905.18 = 125,010.19/x - Step 3: Cross multiply
391,321.45x = 586,905.18 × 125,010.19 - Step 4: Simplify right side
391,321.45x = 73,369,128,063.78 - Step 5: Solve for x
x = 73,369,128,063.78/391,321.45 - Step 6: Final answer
x = 187,490.69
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1.5x scale
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.