Finding the Fourth Proportional to 1,272,489.84, 1,756,039.68 and 728,633.88
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Solution
The fourth proportional to 1,272,489.84, 1,756,039.68 and 728,633.88 is: 1,005,516.87
Step by Step Solution
- Step 1: Write the proportion equation
1,272,489.84 : 1,756,039.68 = 728,633.88 : x - Step 2: Convert to fraction form
1,272,489.84/1,756,039.68 = 728,633.88/x - Step 3: Cross multiply
1,272,489.84x = 1,756,039.68 × 728,633.88 - Step 4: Simplify right side
1,272,489.84x = 1,279,510,005,472.36 - Step 5: Solve for x
x = 1,279,510,005,472.36/1,272,489.84 - Step 6: Final answer
x = 1,005,516.87
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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.