Finding the Fourth Proportional to 860,991.56, 1,291,777.98 and 381,153.17
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Solution
The fourth proportional to 860,991.56, 1,291,777.98 and 381,153.17 is: 571,858.42
Step by Step Solution
- Step 1: Write the proportion equation
860,991.56 : 1,291,777.98 = 381,153.17 : x - Step 2: Convert to fraction form
860,991.56/1,291,777.98 = 381,153.17/x - Step 3: Cross multiply
860,991.56x = 1,291,777.98 × 381,153.17 - Step 4: Simplify right side
860,991.56x = 492,365,272,013.20 - Step 5: Solve for x
x = 492,365,272,013.20/860,991.56 - Step 6: Final answer
x = 571,858.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.