Finding the Fourth Proportional to 506,983.60, 699,699.90 and 289,245.88
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Solution
The fourth proportional to 506,983.60, 699,699.90 and 289,245.88 is: 399,194.99
Step by Step Solution
- Step 1: Write the proportion equation
506,983.60 : 699,699.90 = 289,245.88 : x - Step 2: Convert to fraction form
506,983.60/699,699.90 = 289,245.88/x - Step 3: Cross multiply
506,983.60x = 699,699.90 × 289,245.88 - Step 4: Simplify right side
506,983.60x = 202,385,313,311.41 - Step 5: Solve for x
x = 202,385,313,311.41/506,983.60 - Step 6: Final answer
x = 399,194.99
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1.5x scale
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.