Finding the Fourth Proportional to 470,639.05, 649,486.89 and 255,779.09
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Solution
The fourth proportional to 470,639.05, 649,486.89 and 255,779.09 is: 352,977.86
Step by Step Solution
- Step 1: Write the proportion equation
470,639.05 : 649,486.89 = 255,779.09 : x - Step 2: Convert to fraction form
470,639.05/649,486.89 = 255,779.09/x - Step 3: Cross multiply
470,639.05x = 649,486.89 × 255,779.09 - Step 4: Simplify right side
470,639.05x = 166,125,165,691.13 - Step 5: Solve for x
x = 166,125,165,691.13/470,639.05 - Step 6: Final answer
x = 352,977.86
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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.