Finding the Fourth Proportional to 636,420.94, 878,285.50 and 349,934.87
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Solution
The fourth proportional to 636,420.94, 878,285.50 and 349,934.87 is: 482,923.65
Step by Step Solution
- Step 1: Write the proportion equation
636,420.94 : 878,285.50 = 349,934.87 : x - Step 2: Convert to fraction form
636,420.94/878,285.50 = 349,934.87/x - Step 3: Cross multiply
636,420.94x = 878,285.50 × 349,934.87 - Step 4: Simplify right side
636,420.94x = 307,342,723,586.26 - Step 5: Solve for x
x = 307,342,723,586.26/636,420.94 - Step 6: Final answer
x = 482,923.65
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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.