Finding the Fourth Proportional to 820,430.11, 1,132,250.39 and 457,924.69
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Solution
The fourth proportional to 820,430.11, 1,132,250.39 and 457,924.69 is: 631,967.80
Step by Step Solution
- Step 1: Write the proportion equation
820,430.11 : 1,132,250.39 = 457,924.69 : x - Step 2: Convert to fraction form
820,430.11/1,132,250.39 = 457,924.69/x - Step 3: Cross multiply
820,430.11x = 1,132,250.39 × 457,924.69 - Step 4: Simplify right side
820,430.11x = 518,485,408,843.13 - Step 5: Solve for x
x = 518,485,408,843.13/820,430.11 - Step 6: Final answer
x = 631,967.80
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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.