Finding the Fourth Proportional to 986,626.40, 1,479,939.60 and 785,859.80
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Solution
The fourth proportional to 986,626.40, 1,479,939.60 and 785,859.80 is: 1,178,789.70
Step by Step Solution
- Step 1: Write the proportion equation
986,626.40 : 1,479,939.60 = 785,859.80 : x - Step 2: Convert to fraction form
986,626.40/1,479,939.60 = 785,859.80/x - Step 3: Cross multiply
986,626.40x = 1,479,939.60 × 785,859.80 - Step 4: Simplify right side
986,626.40x = 1,163,025,038,068.08 - Step 5: Solve for x
x = 1,163,025,038,068.08/986,626.40 - Step 6: Final answer
x = 1,178,789.70
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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.