Finding the Fourth Proportional to 636,721.74, 878,705.55 and 350,236.62
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Solution
The fourth proportional to 636,721.74, 878,705.55 and 350,236.62 is: 483,342.79
Step by Step Solution
- Step 1: Write the proportion equation
636,721.74 : 878,705.55 = 350,236.62 : x - Step 2: Convert to fraction form
636,721.74/878,705.55 = 350,236.62/x - Step 3: Cross multiply
636,721.74x = 878,705.55 × 350,236.62 - Step 4: Simplify right side
636,721.74x = 307,754,861,807.24 - Step 5: Solve for x
x = 307,754,861,807.24/636,721.74 - Step 6: Final answer
x = 483,342.79
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1.5x scale
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.