Finding the Fourth Proportional to 860,431.75, 1,187,349.65 and 497,861.53
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Solution
The fourth proportional to 860,431.75, 1,187,349.65 and 497,861.53 is: 687,022.20
Step by Step Solution
- Step 1: Write the proportion equation
860,431.75 : 1,187,349.65 = 497,861.53 : x - Step 2: Convert to fraction form
860,431.75/1,187,349.65 = 497,861.53/x - Step 3: Cross multiply
860,431.75x = 1,187,349.65 × 497,861.53 - Step 4: Simplify right side
860,431.75x = 591,135,710,904.66 - Step 5: Solve for x
x = 591,135,710,904.66/860,431.75 - Step 6: Final answer
x = 687,022.20
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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.