Finding the Fourth Proportional to 678,369.36, 936,153.90 and 372,459.09
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Solution
The fourth proportional to 678,369.36, 936,153.90 and 372,459.09 is: 513,995.84
Step by Step Solution
- Step 1: Write the proportion equation
678,369.36 : 936,153.90 = 372,459.09 : x - Step 2: Convert to fraction form
678,369.36/936,153.90 = 372,459.09/x - Step 3: Cross multiply
678,369.36x = 936,153.90 × 372,459.09 - Step 4: Simplify right side
678,369.36x = 348,679,029,693.95 - Step 5: Solve for x
x = 348,679,029,693.95/678,369.36 - Step 6: Final answer
x = 513,995.84
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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.