Finding the Fourth Proportional to 2,085,428.70, 3,128,143.05 and 887,390.10
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Solution
The fourth proportional to 2,085,428.70, 3,128,143.05 and 887,390.10 is: 1,331,085.15
Step by Step Solution
- Step 1: Write the proportion equation
2,085,428.70 : 3,128,143.05 = 887,390.10 : x - Step 2: Convert to fraction form
2,085,428.70/3,128,143.05 = 887,390.10/x - Step 3: Cross multiply
2,085,428.70x = 3,128,143.05 × 887,390.10 - Step 4: Simplify right side
2,085,428.70x = 2,775,883,173,953.80 - Step 5: Solve for x
x = 2,775,883,173,953.80/2,085,428.70 - Step 6: Final answer
x = 1,331,085.15
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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.