Finding the Fourth Proportional to 912,347.12, 1,258,988.36 and 504,425.12
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Solution
The fourth proportional to 912,347.12, 1,258,988.36 and 504,425.12 is: 696,078.65
Step by Step Solution
- Step 1: Write the proportion equation
912,347.12 : 1,258,988.36 = 504,425.12 : x - Step 2: Convert to fraction form
912,347.12/1,258,988.36 = 504,425.12/x - Step 3: Cross multiply
912,347.12x = 1,258,988.36 × 504,425.12 - Step 4: Simplify right side
912,347.12x = 635,065,354,571.60 - Step 5: Solve for x
x = 635,065,354,571.60/912,347.12 - Step 6: Final answer
x = 696,078.65
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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.