Finding the Fourth Proportional to 812,394.75, 1,121,143.26 and 490,097.94
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Solution
The fourth proportional to 812,394.75, 1,121,143.26 and 490,097.94 is: 676,358.39
Step by Step Solution
- Step 1: Write the proportion equation
812,394.75 : 1,121,143.26 = 490,097.94 : x - Step 2: Convert to fraction form
812,394.75/1,121,143.26 = 490,097.94/x - Step 3: Cross multiply
812,394.75x = 1,121,143.26 × 490,097.94 - Step 4: Simplify right side
812,394.75x = 549,470,002,170.88 - Step 5: Solve for x
x = 549,470,002,170.88/812,394.75 - Step 6: Final answer
x = 676,358.39
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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.