Finding the Fourth Proportional to 1,276,615.69, 1,915,378.80 and 636,862.84
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Solution
The fourth proportional to 1,276,615.69, 1,915,378.80 and 636,862.84 is: 955,521.37
Step by Step Solution
- Step 1: Write the proportion equation
1,276,615.69 : 1,915,378.80 = 636,862.84 : x - Step 2: Convert to fraction form
1,276,615.69/1,915,378.80 = 636,862.84/x - Step 3: Cross multiply
1,276,615.69x = 1,915,378.80 × 636,862.84 - Step 4: Simplify right side
1,276,615.69x = 1,219,833,575,067.11 - Step 5: Solve for x
x = 1,219,833,575,067.11/1,276,615.69 - Step 6: Final answer
x = 955,521.37
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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.