Finding the Fourth Proportional to 1,605,378.70, 2,215,522.12 and 889,986.70
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Solution
The fourth proportional to 1,605,378.70, 2,215,522.12 and 889,986.70 is: 1,228,236.81
Step by Step Solution
- Step 1: Write the proportion equation
1,605,378.70 : 2,215,522.12 = 889,986.70 : x - Step 2: Convert to fraction form
1,605,378.70/2,215,522.12 = 889,986.70/x - Step 3: Cross multiply
1,605,378.70x = 2,215,522.12 × 889,986.70 - Step 4: Simplify right side
1,605,378.70x = 1,971,785,220,355.80 - Step 5: Solve for x
x = 1,971,785,220,355.80/1,605,378.70 - Step 6: Final answer
x = 1,228,236.81
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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.