Finding the Fourth Proportional to 1,292,120.84, 1,783,108.88 and 719,161.20
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Solution
The fourth proportional to 1,292,120.84, 1,783,108.88 and 719,161.20 is: 992,432.50
Step by Step Solution
- Step 1: Write the proportion equation
1,292,120.84 : 1,783,108.88 = 719,161.20 : x - Step 2: Convert to fraction form
1,292,120.84/1,783,108.88 = 719,161.20/x - Step 3: Cross multiply
1,292,120.84x = 1,783,108.88 × 719,161.20 - Step 4: Simplify right side
1,292,120.84x = 1,282,342,721,871.46 - Step 5: Solve for x
x = 1,282,342,721,871.46/1,292,120.84 - Step 6: Final answer
x = 992,432.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.