Finding the Fourth Proportional to 1,288,149.08, 1,777,701.24 and 715,189.28
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Solution
The fourth proportional to 1,288,149.08, 1,777,701.24 and 715,189.28 is: 986,992.03
Step by Step Solution
- Step 1: Write the proportion equation
1,288,149.08 : 1,777,701.24 = 715,189.28 : x - Step 2: Convert to fraction form
1,288,149.08/1,777,701.24 = 715,189.28/x - Step 3: Cross multiply
1,288,149.08x = 1,777,701.24 × 715,189.28 - Step 4: Simplify right side
1,288,149.08x = 1,271,392,869,890.71 - Step 5: Solve for x
x = 1,271,392,869,890.71/1,288,149.08 - Step 6: Final answer
x = 986,992.03
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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.