Finding the Fourth Proportional to 639,497.80, 959,246.70 and 307,721.80
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Solution
The fourth proportional to 639,497.80, 959,246.70 and 307,721.80 is: 461,582.70
Step by Step Solution
- Step 1: Write the proportion equation
639,497.80 : 959,246.70 = 307,721.80 : x - Step 2: Convert to fraction form
639,497.80/959,246.70 = 307,721.80/x - Step 3: Cross multiply
639,497.80x = 959,246.70 × 307,721.80 - Step 4: Simplify right side
639,497.80x = 295,181,121,168.06 - Step 5: Solve for x
x = 295,181,121,168.06/639,497.80 - Step 6: Final answer
x = 461,582.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.