Finding the Fourth Proportional to 1,375,843.60, 2,063,959.80 and 429,115.60
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Solution
The fourth proportional to 1,375,843.60, 2,063,959.80 and 429,115.60 is: 643,734.03
Step by Step Solution
- Step 1: Write the proportion equation
1,375,843.60 : 2,063,959.80 = 429,115.60 : x - Step 2: Convert to fraction form
1,375,843.60/2,063,959.80 = 429,115.60/x - Step 3: Cross multiply
1,375,843.60x = 2,063,959.80 × 429,115.60 - Step 4: Simplify right side
1,375,843.60x = 885,677,347,952.88 - Step 5: Solve for x
x = 885,677,347,952.88/1,375,843.60 - Step 6: Final answer
x = 643,734.03
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.