Finding the Fourth Proportional to 890,456.40, 1,335,814.20 and 291,272.40
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Solution
The fourth proportional to 890,456.40, 1,335,814.20 and 291,272.40 is: 436,950.99
Step by Step Solution
- Step 1: Write the proportion equation
890,456.40 : 1,335,814.20 = 291,272.40 : x - Step 2: Convert to fraction form
890,456.40/1,335,814.20 = 291,272.40/x - Step 3: Cross multiply
890,456.40x = 1,335,814.20 × 291,272.40 - Step 4: Simplify right side
890,456.40x = 389,085,807,988.08 - Step 5: Solve for x
x = 389,085,807,988.08/890,456.40 - Step 6: Final answer
x = 436,950.99
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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.