Finding the Fourth Proportional to 620,119.90, 929,195.70 and 409,511.80
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Solution
The fourth proportional to 620,119.90, 929,195.70 and 409,511.80 is: 613,617.79
Step by Step Solution
- Step 1: Write the proportion equation
620,119.90 : 929,195.70 = 409,511.80 : x - Step 2: Convert to fraction form
620,119.90/929,195.70 = 409,511.80/x - Step 3: Cross multiply
620,119.90x = 929,195.70 × 409,511.80 - Step 4: Simplify right side
620,119.90x = 380,516,603,659.26 - Step 5: Solve for x
x = 380,516,603,659.26/620,119.90 - Step 6: Final answer
x = 613,617.79
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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.