Finding the Fourth Proportional to 990,431.60, 1,481,710.80 and 858,774.20
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Solution
The fourth proportional to 990,431.60, 1,481,710.80 and 858,774.20 is: 1,284,747.99
Step by Step Solution
- Step 1: Write the proportion equation
990,431.60 : 1,481,710.80 = 858,774.20 : x - Step 2: Convert to fraction form
990,431.60/1,481,710.80 = 858,774.20/x - Step 3: Cross multiply
990,431.60x = 1,481,710.80 × 858,774.20 - Step 4: Simplify right side
990,431.60x = 1,272,455,006,901.36 - Step 5: Solve for x
x = 1,272,455,006,901.36/990,431.60 - Step 6: Final answer
x = 1,284,747.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.