Finding the Fourth Proportional to 400,105.68, 549,836.58 and 381,603.12
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Solution
The fourth proportional to 400,105.68, 549,836.58 and 381,603.12 is: 524,409.84
Step by Step Solution
- Step 1: Write the proportion equation
400,105.68 : 549,836.58 = 381,603.12 : x - Step 2: Convert to fraction form
400,105.68/549,836.58 = 381,603.12/x - Step 3: Cross multiply
400,105.68x = 549,836.58 × 381,603.12 - Step 4: Simplify right side
400,105.68x = 209,819,354,418.13 - Step 5: Solve for x
x = 209,819,354,418.13/400,105.68 - Step 6: Final answer
x = 524,409.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.