Finding the Fourth Proportional to 465,945.48, 698,919.12 and 128,987.08
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Solution
The fourth proportional to 465,945.48, 698,919.12 and 128,987.08 is: 193,480.87
Step by Step Solution
- Step 1: Write the proportion equation
465,945.48 : 698,919.12 = 128,987.08 : x - Step 2: Convert to fraction form
465,945.48/698,919.12 = 128,987.08/x - Step 3: Cross multiply
465,945.48x = 698,919.12 × 128,987.08 - Step 4: Simplify right side
465,945.48x = 90,151,536,444.97 - Step 5: Solve for x
x = 90,151,536,444.97/465,945.48 - Step 6: Final answer
x = 193,480.87
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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.