Finding the Fourth Proportional to 860,209.68, 1,187,022.12 and 478,213.20
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Solution
The fourth proportional to 860,209.68, 1,187,022.12 and 478,213.20 is: 659,896.84
Step by Step Solution
- Step 1: Write the proportion equation
860,209.68 : 1,187,022.12 = 478,213.20 : x - Step 2: Convert to fraction form
860,209.68/1,187,022.12 = 478,213.20/x - Step 3: Cross multiply
860,209.68x = 1,187,022.12 × 478,213.20 - Step 4: Simplify right side
860,209.68x = 567,649,646,475.98 - Step 5: Solve for x
x = 567,649,646,475.98/860,209.68 - Step 6: Final answer
x = 659,896.84
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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.