Finding the Fourth Proportional to 2,128,793.18, 3,190,417.41 and 865,143.50
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Solution
The fourth proportional to 2,128,793.18, 3,190,417.41 and 865,143.50 is: 1,296,588.56
Step by Step Solution
- Step 1: Write the proportion equation
2,128,793.18 : 3,190,417.41 = 865,143.50 : x - Step 2: Convert to fraction form
2,128,793.18/3,190,417.41 = 865,143.50/x - Step 3: Cross multiply
2,128,793.18x = 3,190,417.41 × 865,143.50 - Step 4: Simplify right side
2,128,793.18x = 2,760,168,884,548.34 - Step 5: Solve for x
x = 2,760,168,884,548.34/2,128,793.18 - Step 6: Final answer
x = 1,296,588.56
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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.