Finding the Fourth Proportional to 1,461,419.20, 2,192,128.80 and 664,257.70
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Solution
The fourth proportional to 1,461,419.20, 2,192,128.80 and 664,257.70 is: 996,386.55
Step by Step Solution
- Step 1: Write the proportion equation
1,461,419.20 : 2,192,128.80 = 664,257.70 : x - Step 2: Convert to fraction form
1,461,419.20/2,192,128.80 = 664,257.70/x - Step 3: Cross multiply
1,461,419.20x = 2,192,128.80 × 664,257.70 - Step 4: Simplify right side
1,461,419.20x = 1,456,138,434,791.76 - Step 5: Solve for x
x = 1,456,138,434,791.76/1,461,419.20 - Step 6: Final answer
x = 996,386.55
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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.