Finding the Fourth Proportional to 451,006.65, 621,890.44 and 287,403.99
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Solution
The fourth proportional to 451,006.65, 621,890.44 and 287,403.99 is: 396,299.69
Step by Step Solution
- Step 1: Write the proportion equation
451,006.65 : 621,890.44 = 287,403.99 : x - Step 2: Convert to fraction form
451,006.65/621,890.44 = 287,403.99/x - Step 3: Cross multiply
451,006.65x = 621,890.44 × 287,403.99 - Step 4: Simplify right side
451,006.65x = 178,733,795,525.09 - Step 5: Solve for x
x = 178,733,795,525.09/451,006.65 - Step 6: Final answer
x = 396,299.69
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.