Finding the Fourth Proportional to 753,087.40, 1,129,631.10 and 453,905.80
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Solution
The fourth proportional to 753,087.40, 1,129,631.10 and 453,905.80 is: 680,858.70
Step by Step Solution
- Step 1: Write the proportion equation
753,087.40 : 1,129,631.10 = 453,905.80 : x - Step 2: Convert to fraction form
753,087.40/1,129,631.10 = 453,905.80/x - Step 3: Cross multiply
753,087.40x = 1,129,631.10 × 453,905.80 - Step 4: Simplify right side
753,087.40x = 512,746,108,150.38 - Step 5: Solve for x
x = 512,746,108,150.38/753,087.40 - Step 6: Final answer
x = 680,858.70
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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.