Finding the Fourth Proportional to 1,620,128.80, 2,430,193.20 and 675,344.80
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Solution
The fourth proportional to 1,620,128.80, 2,430,193.20 and 675,344.80 is: 1,013,017.20
Step by Step Solution
- Step 1: Write the proportion equation
1,620,128.80 : 2,430,193.20 = 675,344.80 : x - Step 2: Convert to fraction form
1,620,128.80/2,430,193.20 = 675,344.80/x - Step 3: Cross multiply
1,620,128.80x = 2,430,193.20 × 675,344.80 - Step 4: Simplify right side
1,620,128.80x = 1,641,218,340,615.36 - Step 5: Solve for x
x = 1,641,218,340,615.36/1,620,128.80 - Step 6: Final answer
x = 1,013,017.20
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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.