Finding the Fourth Proportional to 1,185,986.66, 1,636,659.42 and 642,122.36
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Solution
The fourth proportional to 1,185,986.66, 1,636,659.42 and 642,122.36 is: 886,127.68
Step by Step Solution
- Step 1: Write the proportion equation
1,185,986.66 : 1,636,659.42 = 642,122.36 : x - Step 2: Convert to fraction form
1,185,986.66/1,636,659.42 = 642,122.36/x - Step 3: Cross multiply
1,185,986.66x = 1,636,659.42 × 642,122.36 - Step 4: Simplify right side
1,185,986.66x = 1,050,935,609,286.63 - Step 5: Solve for x
x = 1,050,935,609,286.63/1,185,986.66 - Step 6: Final answer
x = 886,127.68
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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.