Finding the Fourth Proportional to 492,516.65, 679,643.70 and 285,769.06
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Solution
The fourth proportional to 492,516.65, 679,643.70 and 285,769.06 is: 394,344.32
Step by Step Solution
- Step 1: Write the proportion equation
492,516.65 : 679,643.70 = 285,769.06 : x - Step 2: Convert to fraction form
492,516.65/679,643.70 = 285,769.06/x - Step 3: Cross multiply
492,516.65x = 679,643.70 × 285,769.06 - Step 4: Simplify right side
492,516.65x = 194,221,141,283.92 - Step 5: Solve for x
x = 194,221,141,283.92/492,516.65 - Step 6: Final answer
x = 394,344.32
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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.