Finding the Fourth Proportional to 492,660.57, 679,888.38 and 285,913.05
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Solution
The fourth proportional to 492,660.57, 679,888.38 and 285,913.05 is: 394,569.75
Step by Step Solution
- Step 1: Write the proportion equation
492,660.57 : 679,888.38 = 285,913.05 : x - Step 2: Convert to fraction form
492,660.57/679,888.38 = 285,913.05/x - Step 3: Cross multiply
492,660.57x = 679,888.38 × 285,913.05 - Step 4: Simplify right side
492,660.57x = 194,388,960,385.36 - Step 5: Solve for x
x = 194,388,960,385.36/492,660.57 - Step 6: Final answer
x = 394,569.75
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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.