Finding the Fourth Proportional to 2,166,357.42, 2,989,620.05 and 1,186,337.79
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Solution
The fourth proportional to 2,166,357.42, 2,989,620.05 and 1,186,337.79 is: 1,637,171.78
Step by Step Solution
- Step 1: Write the proportion equation
2,166,357.42 : 2,989,620.05 = 1,186,337.79 : x - Step 2: Convert to fraction form
2,166,357.42/2,989,620.05 = 1,186,337.79/x - Step 3: Cross multiply
2,166,357.42x = 2,989,620.05 × 1,186,337.79 - Step 4: Simplify right side
2,166,357.42x = 3,546,699,237,125.00 - Step 5: Solve for x
x = 3,546,699,237,125.00/2,166,357.42 - Step 6: Final answer
x = 1,637,171.78
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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.