Finding the Fourth Proportional to 2,121,472.14, 3,181,221.62 and 772,695.78
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Solution
The fourth proportional to 2,121,472.14, 3,181,221.62 and 772,695.78 is: 1,158,684.33
Step by Step Solution
- Step 1: Write the proportion equation
2,121,472.14 : 3,181,221.62 = 772,695.78 : x - Step 2: Convert to fraction form
2,121,472.14/3,181,221.62 = 772,695.78/x - Step 3: Cross multiply
2,121,472.14x = 3,181,221.62 × 772,695.78 - Step 4: Simplify right side
2,121,472.14x = 2,458,116,521,018.76 - Step 5: Solve for x
x = 2,458,116,521,018.76/2,121,472.14 - Step 6: Final answer
x = 1,158,684.33
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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.