Finding the Fourth Proportional to 1,272,649.20, 1,756,174.68 and 728,784.24
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Solution
The fourth proportional to 1,272,649.20, 1,756,174.68 and 728,784.24 is: 1,005,675.74
Step by Step Solution
- Step 1: Write the proportion equation
1,272,649.20 : 1,756,174.68 = 728,784.24 : x - Step 2: Convert to fraction form
1,272,649.20/1,756,174.68 = 728,784.24/x - Step 3: Cross multiply
1,272,649.20x = 1,756,174.68 × 728,784.24 - Step 4: Simplify right side
1,272,649.20x = 1,279,872,429,471.04 - Step 5: Solve for x
x = 1,279,872,429,471.04/1,272,649.20 - Step 6: Final answer
x = 1,005,675.74
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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.