Finding the Fourth Proportional to 681,644.70, 940,739.67 and 409,801.14
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Solution
The fourth proportional to 681,644.70, 940,739.67 and 409,801.14 is: 565,567.65
Step by Step Solution
- Step 1: Write the proportion equation
681,644.70 : 940,739.67 = 409,801.14 : x - Step 2: Convert to fraction form
681,644.70/940,739.67 = 409,801.14/x - Step 3: Cross multiply
681,644.70x = 940,739.67 × 409,801.14 - Step 4: Simplify right side
681,644.70x = 385,516,189,209.22 - Step 5: Solve for x
x = 385,516,189,209.22/681,644.70 - Step 6: Final answer
x = 565,567.65
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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.