Finding the Fourth Proportional to 691,743.62, 954,607.77 and 389,937.62
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Solution
The fourth proportional to 691,743.62, 954,607.77 and 389,937.62 is: 538,114.80
Step by Step Solution
- Step 1: Write the proportion equation
691,743.62 : 954,607.77 = 389,937.62 : x - Step 2: Convert to fraction form
691,743.62/954,607.77 = 389,937.62/x - Step 3: Cross multiply
691,743.62x = 954,607.77 × 389,937.62 - Step 4: Simplify right side
691,743.62x = 372,237,481,867.31 - Step 5: Solve for x
x = 372,237,481,867.31/691,743.62 - Step 6: Final answer
x = 538,114.80
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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.