Finding the Fourth Proportional to 990,598.96, 1,367,065.76 and 555,020.09
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Solution
The fourth proportional to 990,598.96, 1,367,065.76 and 555,020.09 is: 765,949.68
Step by Step Solution
- Step 1: Write the proportion equation
990,598.96 : 1,367,065.76 = 555,020.09 : x - Step 2: Convert to fraction form
990,598.96/1,367,065.76 = 555,020.09/x - Step 3: Cross multiply
990,598.96x = 1,367,065.76 × 555,020.09 - Step 4: Simplify right side
990,598.96x = 758,748,961,151.12 - Step 5: Solve for x
x = 758,748,961,151.12/990,598.96 - Step 6: Final answer
x = 765,949.68
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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.