Finding the Fourth Proportional to 1,508,128.80, 2,262,193.20 and 1,330,981.80
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Solution
The fourth proportional to 1,508,128.80, 2,262,193.20 and 1,330,981.80 is: 1,996,472.70
Step by Step Solution
- Step 1: Write the proportion equation
1,508,128.80 : 2,262,193.20 = 1,330,981.80 : x - Step 2: Convert to fraction form
1,508,128.80/2,262,193.20 = 1,330,981.80/x - Step 3: Cross multiply
1,508,128.80x = 2,262,193.20 × 1,330,981.80 - Step 4: Simplify right side
1,508,128.80x = 3,010,937,977,283.76 - Step 5: Solve for x
x = 3,010,937,977,283.76/1,508,128.80 - Step 6: Final answer
x = 1,996,472.70
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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.