Finding the Fourth Proportional to 1,186,695.77, 1,637,647.97 and 642,831.53
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Solution
The fourth proportional to 1,186,695.77, 1,637,647.97 and 642,831.53 is: 887,111.73
Step by Step Solution
- Step 1: Write the proportion equation
1,186,695.77 : 1,637,647.97 = 642,831.53 : x - Step 2: Convert to fraction form
1,186,695.77/1,637,647.97 = 642,831.53/x - Step 3: Cross multiply
1,186,695.77x = 1,637,647.97 × 642,831.53 - Step 4: Simplify right side
1,186,695.77x = 1,052,731,738,754.10 - Step 5: Solve for x
x = 1,052,731,738,754.10/1,186,695.77 - Step 6: Final answer
x = 887,111.73
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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.