Finding the Fourth Proportional to 1,221,589.19, 1,685,995.43 and 677,899.62
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Solution
The fourth proportional to 1,221,589.19, 1,685,995.43 and 677,899.62 is: 935,613.76
Step by Step Solution
- Step 1: Write the proportion equation
1,221,589.19 : 1,685,995.43 = 677,899.62 : x - Step 2: Convert to fraction form
1,221,589.19/1,685,995.43 = 677,899.62/x - Step 3: Cross multiply
1,221,589.19x = 1,685,995.43 × 677,899.62 - Step 4: Simplify right side
1,221,589.19x = 1,142,935,657,929.24 - Step 5: Solve for x
x = 1,142,935,657,929.24/1,221,589.19 - Step 6: Final answer
x = 935,613.76
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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.