Finding the Fourth Proportional to 657,742.75, 907,686.21 and 355,936.75
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Solution
The fourth proportional to 657,742.75, 907,686.21 and 355,936.75 is: 491,193.37
Step by Step Solution
- Step 1: Write the proportion equation
657,742.75 : 907,686.21 = 355,936.75 : x - Step 2: Convert to fraction form
657,742.75/907,686.21 = 355,936.75/x - Step 3: Cross multiply
657,742.75x = 907,686.21 × 355,936.75 - Step 4: Simplify right side
657,742.75x = 323,078,879,607.22 - Step 5: Solve for x
x = 323,078,879,607.22/657,742.75 - Step 6: Final answer
x = 491,193.37
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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.