Finding the Fourth Proportional to 5,430,938.28, 7,493,861.70 and 3,138,656.28
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Solution
The fourth proportional to 5,430,938.28, 7,493,861.70 and 3,138,656.28 is: 4,330,864.18
Step by Step Solution
- Step 1: Write the proportion equation
5,430,938.28 : 7,493,861.70 = 3,138,656.28 : x - Step 2: Convert to fraction form
5,430,938.28/7,493,861.70 = 3,138,656.28/x - Step 3: Cross multiply
5,430,938.28x = 7,493,861.70 × 3,138,656.28 - Step 4: Simplify right side
5,430,938.28x = 23,520,656,086,156.48 - Step 5: Solve for x
x = 23,520,656,086,156.48/5,430,938.28 - Step 6: Final answer
x = 4,330,864.18
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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.