Finding the Fourth Proportional to 930,928.40, 1,396,392.60 and 457,515.80
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Solution
The fourth proportional to 930,928.40, 1,396,392.60 and 457,515.80 is: 686,273.70
Step by Step Solution
- Step 1: Write the proportion equation
930,928.40 : 1,396,392.60 = 457,515.80 : x - Step 2: Convert to fraction form
930,928.40/1,396,392.60 = 457,515.80/x - Step 3: Cross multiply
930,928.40x = 1,396,392.60 × 457,515.80 - Step 4: Simplify right side
930,928.40x = 638,871,677,503.08 - Step 5: Solve for x
x = 638,871,677,503.08/930,928.40 - Step 6: Final answer
x = 686,273.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.