Finding the Fourth Proportional to 2,128,807.18, 3,190,438.38 and 865,157.50
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Solution
The fourth proportional to 2,128,807.18, 3,190,438.38 and 865,157.50 is: 1,296,609.54
Step by Step Solution
- Step 1: Write the proportion equation
2,128,807.18 : 3,190,438.38 = 865,157.50 : x - Step 2: Convert to fraction form
2,128,807.18/3,190,438.38 = 865,157.50/x - Step 3: Cross multiply
2,128,807.18x = 3,190,438.38 × 865,157.50 - Step 4: Simplify right side
2,128,807.18x = 2,760,231,692,744.85 - Step 5: Solve for x
x = 2,760,231,692,744.85/2,128,807.18 - Step 6: Final answer
x = 1,296,609.54
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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.