Finding the Fourth Proportional to 515,390.14, 711,214.30 and 285,944.99
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Solution
The fourth proportional to 515,390.14, 711,214.30 and 285,944.99 is: 394,590.71
Step by Step Solution
- Step 1: Write the proportion equation
515,390.14 : 711,214.30 = 285,944.99 : x - Step 2: Convert to fraction form
515,390.14/711,214.30 = 285,944.99/x - Step 3: Cross multiply
515,390.14x = 711,214.30 × 285,944.99 - Step 4: Simplify right side
515,390.14x = 203,368,161,898.50 - Step 5: Solve for x
x = 203,368,161,898.50/515,390.14 - Step 6: Final answer
x = 394,590.71
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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.