Finding the Fourth Proportional to 691,745.40, 1,037,618.10 and 424,639.80
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Solution
The fourth proportional to 691,745.40, 1,037,618.10 and 424,639.80 is: 636,959.70
Step by Step Solution
- Step 1: Write the proportion equation
691,745.40 : 1,037,618.10 = 424,639.80 : x - Step 2: Convert to fraction form
691,745.40/1,037,618.10 = 424,639.80/x - Step 3: Cross multiply
691,745.40x = 1,037,618.10 × 424,639.80 - Step 4: Simplify right side
691,745.40x = 440,613,942,460.38 - Step 5: Solve for x
x = 440,613,942,460.38/691,745.40 - Step 6: Final answer
x = 636,959.70
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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.