Finding the Fourth Proportional to 990,714.05, 1,367,603.90 and 668,860.09
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Solution
The fourth proportional to 990,714.05, 1,367,603.90 and 668,860.09 is: 923,309.47
Step by Step Solution
- Step 1: Write the proportion equation
990,714.05 : 1,367,603.90 = 668,860.09 : x - Step 2: Convert to fraction form
990,714.05/1,367,603.90 = 668,860.09/x - Step 3: Cross multiply
990,714.05x = 1,367,603.90 × 668,860.09 - Step 4: Simplify right side
990,714.05x = 914,735,667,638.35 - Step 5: Solve for x
x = 914,735,667,638.35/990,714.05 - Step 6: Final answer
x = 923,309.47
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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.