Finding the Fourth Proportional to 1,752,644.70, 2,630,003.85 and 1,278,135.90
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Solution
The fourth proportional to 1,752,644.70, 2,630,003.85 and 1,278,135.90 is: 1,917,959.95
Step by Step Solution
- Step 1: Write the proportion equation
1,752,644.70 : 2,630,003.85 = 1,278,135.90 : x - Step 2: Convert to fraction form
1,752,644.70/2,630,003.85 = 1,278,135.90/x - Step 3: Cross multiply
1,752,644.70x = 2,630,003.85 × 1,278,135.90 - Step 4: Simplify right side
1,752,644.70x = 3,361,502,337,823.22 - Step 5: Solve for x
x = 3,361,502,337,823.22/1,752,644.70 - Step 6: Final answer
x = 1,917,959.95
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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.