Finding the Fourth Proportional to 1,186,694.81, 1,637,646.73 and 642,830.62
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Solution
The fourth proportional to 1,186,694.81, 1,637,646.73 and 642,830.62 is: 887,110.53
Step by Step Solution
- Step 1: Write the proportion equation
1,186,694.81 : 1,637,646.73 = 642,830.62 : x - Step 2: Convert to fraction form
1,186,694.81/1,637,646.73 = 642,830.62/x - Step 3: Cross multiply
1,186,694.81x = 1,637,646.73 × 642,830.62 - Step 4: Simplify right side
1,186,694.81x = 1,052,729,464,762.15 - Step 5: Solve for x
x = 1,052,729,464,762.15/1,186,694.81 - Step 6: Final answer
x = 887,110.53
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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.