Finding the Fourth Proportional to 508,799.21, 702,115.49 and 282,430.13
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Solution
The fourth proportional to 508,799.21, 702,115.49 and 282,430.13 is: 389,738.36
Step by Step Solution
- Step 1: Write the proportion equation
508,799.21 : 702,115.49 = 282,430.13 : x - Step 2: Convert to fraction form
508,799.21/702,115.49 = 282,430.13/x - Step 3: Cross multiply
508,799.21x = 702,115.49 × 282,430.13 - Step 4: Simplify right side
508,799.21x = 198,298,566,311.21 - Step 5: Solve for x
x = 198,298,566,311.21/508,799.21 - Step 6: Final answer
x = 389,738.36
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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.