Finding the Fourth Proportional to 812,776.77, 1,121,620.10 and 450,199.44
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Solution
The fourth proportional to 812,776.77, 1,121,620.10 and 450,199.44 is: 621,268.66
Step by Step Solution
- Step 1: Write the proportion equation
812,776.77 : 1,121,620.10 = 450,199.44 : x - Step 2: Convert to fraction form
812,776.77/1,121,620.10 = 450,199.44/x - Step 3: Cross multiply
812,776.77x = 1,121,620.10 × 450,199.44 - Step 4: Simplify right side
812,776.77x = 504,952,738,661.75 - Step 5: Solve for x
x = 504,952,738,661.75/812,776.77 - Step 6: Final answer
x = 621,268.66
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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.