Finding the Fourth Proportional to 1,292,126.84, 1,783,117.16 and 719,167.20
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Solution
The fourth proportional to 1,292,126.84, 1,783,117.16 and 719,167.20 is: 992,440.78
Step by Step Solution
- Step 1: Write the proportion equation
1,292,126.84 : 1,783,117.16 = 719,167.20 : x - Step 2: Convert to fraction form
1,292,126.84/1,783,117.16 = 719,167.20/x - Step 3: Cross multiply
1,292,126.84x = 1,783,117.16 × 719,167.20 - Step 4: Simplify right side
1,292,126.84x = 1,282,359,375,229.15 - Step 5: Solve for x
x = 1,282,359,375,229.15/1,292,126.84 - Step 6: Final answer
x = 992,440.78
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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.