Finding the Fourth Proportional to 639,160.80, 958,514.40 and 283,538.40
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Solution
The fourth proportional to 639,160.80, 958,514.40 and 283,538.40 is: 425,206.99
Step by Step Solution
- Step 1: Write the proportion equation
639,160.80 : 958,514.40 = 283,538.40 : x - Step 2: Convert to fraction form
639,160.80/958,514.40 = 283,538.40/x - Step 3: Cross multiply
639,160.80x = 958,514.40 × 283,538.40 - Step 4: Simplify right side
639,160.80x = 271,775,639,352.96 - Step 5: Solve for x
x = 271,775,639,352.96/639,160.80 - Step 6: Final answer
x = 425,206.99
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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.