Finding the Fourth Proportional to 819,636.12, 1,229,454.18 and 640,025.10
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Solution
The fourth proportional to 819,636.12, 1,229,454.18 and 640,025.10 is: 960,037.65
Step by Step Solution
- Step 1: Write the proportion equation
819,636.12 : 1,229,454.18 = 640,025.10 : x - Step 2: Convert to fraction form
819,636.12/1,229,454.18 = 640,025.10/x - Step 3: Cross multiply
819,636.12x = 1,229,454.18 × 640,025.10 - Step 4: Simplify right side
819,636.12x = 786,881,534,499.92 - Step 5: Solve for x
x = 786,881,534,499.92/819,636.12 - Step 6: Final answer
x = 960,037.65
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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.