Finding the Fourth Proportional to 1,439,012.20, 1,985,805.26 and 785,615.88
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Solution
The fourth proportional to 1,439,012.20, 1,985,805.26 and 785,615.88 is: 1,084,132.68
Step by Step Solution
- Step 1: Write the proportion equation
1,439,012.20 : 1,985,805.26 = 785,615.88 : x - Step 2: Convert to fraction form
1,439,012.20/1,985,805.26 = 785,615.88/x - Step 3: Cross multiply
1,439,012.20x = 1,985,805.26 × 785,615.88 - Step 4: Simplify right side
1,439,012.20x = 1,560,080,146,843.53 - Step 5: Solve for x
x = 1,560,080,146,843.53/1,439,012.20 - Step 6: Final answer
x = 1,084,132.68
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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.