Finding the Fourth Proportional to 812,781.48, 1,121,588.97 and 450,183.84
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Solution
The fourth proportional to 812,781.48, 1,121,588.97 and 450,183.84 is: 621,226.30
Step by Step Solution
- Step 1: Write the proportion equation
812,781.48 : 1,121,588.97 = 450,183.84 : x - Step 2: Convert to fraction form
812,781.48/1,121,588.97 = 450,183.84/x - Step 3: Cross multiply
812,781.48x = 1,121,588.97 × 450,183.84 - Step 4: Simplify right side
812,781.48x = 504,921,229,416.25 - Step 5: Solve for x
x = 504,921,229,416.25/812,781.48 - Step 6: Final answer
x = 621,226.30
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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.