Finding the Fourth Proportional to 1,272,722.18, 1,756,319.61 and 721,488.99
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Solution
The fourth proportional to 1,272,722.18, 1,756,319.61 and 721,488.99 is: 995,633.84
Step by Step Solution
- Step 1: Write the proportion equation
1,272,722.18 : 1,756,319.61 = 721,488.99 : x - Step 2: Convert to fraction form
1,272,722.18/1,756,319.61 = 721,488.99/x - Step 3: Cross multiply
1,272,722.18x = 1,756,319.61 × 721,488.99 - Step 4: Simplify right side
1,272,722.18x = 1,267,165,261,536.09 - Step 5: Solve for x
x = 1,267,165,261,536.09/1,272,722.18 - Step 6: Final answer
x = 995,633.84
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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.