Finding the Fourth Proportional to 442,129.80, 663,194.70 and 403,422.60
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Solution
The fourth proportional to 442,129.80, 663,194.70 and 403,422.60 is: 605,133.90
Step by Step Solution
- Step 1: Write the proportion equation
442,129.80 : 663,194.70 = 403,422.60 : x - Step 2: Convert to fraction form
442,129.80/663,194.70 = 403,422.60/x - Step 3: Cross multiply
442,129.80x = 663,194.70 × 403,422.60 - Step 4: Simplify right side
442,129.80x = 267,547,730,180.22 - Step 5: Solve for x
x = 267,547,730,180.22/442,129.80 - Step 6: Final answer
x = 605,133.90
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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.