Finding the Fourth Proportional to 1,248,936.20, 1,723,573.70 and 765,407.91
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Solution
The fourth proportional to 1,248,936.20, 1,723,573.70 and 765,407.91 is: 1,056,288.50
Step by Step Solution
- Step 1: Write the proportion equation
1,248,936.20 : 1,723,573.70 = 765,407.91 : x - Step 2: Convert to fraction form
1,248,936.20/1,723,573.70 = 765,407.91/x - Step 3: Cross multiply
1,248,936.20x = 1,723,573.70 × 765,407.91 - Step 4: Simplify right side
1,248,936.20x = 1,319,236,943,447.97 - Step 5: Solve for x
x = 1,319,236,943,447.97/1,248,936.20 - Step 6: Final answer
x = 1,056,288.50
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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.