Finding the Fourth Proportional to 620,662.68, 856,515.08 and 352,390.68
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Solution
The fourth proportional to 620,662.68, 856,515.08 and 352,390.68 is: 486,299.47
Step by Step Solution
- Step 1: Write the proportion equation
620,662.68 : 856,515.08 = 352,390.68 : x - Step 2: Convert to fraction form
620,662.68/856,515.08 = 352,390.68/x - Step 3: Cross multiply
620,662.68x = 856,515.08 × 352,390.68 - Step 4: Simplify right side
620,662.68x = 301,827,931,471.45 - Step 5: Solve for x
x = 301,827,931,471.45/620,662.68 - Step 6: Final answer
x = 486,299.47
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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.