Finding the Fourth Proportional to 990,272.45, 1,366,580.09 and 560,635.49
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Solution
The fourth proportional to 990,272.45, 1,366,580.09 and 560,635.49 is: 773,679.30
Step by Step Solution
- Step 1: Write the proportion equation
990,272.45 : 1,366,580.09 = 560,635.49 : x - Step 2: Convert to fraction form
990,272.45/1,366,580.09 = 560,635.49/x - Step 3: Cross multiply
990,272.45x = 1,366,580.09 × 560,635.49 - Step 4: Simplify right side
990,272.45x = 766,153,298,381.39 - Step 5: Solve for x
x = 766,153,298,381.39/990,272.45 - Step 6: Final answer
x = 773,679.30
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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.