Finding the Fourth Proportional to 811,910.98, 1,121,508.09 and 623,255.62
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Solution
The fourth proportional to 811,910.98, 1,121,508.09 and 623,255.62 is: 860,914.85
Step by Step Solution
- Step 1: Write the proportion equation
811,910.98 : 1,121,508.09 = 623,255.62 : x - Step 2: Convert to fraction form
811,910.98/1,121,508.09 = 623,255.62/x - Step 3: Cross multiply
811,910.98x = 1,121,508.09 × 623,255.62 - Step 4: Simplify right side
811,910.98x = 698,986,219,967.97 - Step 5: Solve for x
x = 698,986,219,967.97/811,910.98 - Step 6: Final answer
x = 860,914.85
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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.