Finding the Fourth Proportional to 8,430,355.86, 11,634,172.70 and 5,166,539.97
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Solution
The fourth proportional to 8,430,355.86, 11,634,172.70 and 5,166,539.97 is: 7,129,997.74
Step by Step Solution
- Step 1: Write the proportion equation
8,430,355.86 : 11,634,172.70 = 5,166,539.97 : x - Step 2: Convert to fraction form
8,430,355.86/11,634,172.70 = 5,166,539.97/x - Step 3: Cross multiply
8,430,355.86x = 11,634,172.70 × 5,166,539.97 - Step 4: Simplify right side
8,430,355.86x = 60,108,418,246,600.12 - Step 5: Solve for x
x = 60,108,418,246,600.12/8,430,355.86 - Step 6: Final answer
x = 7,129,997.74
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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.