Finding the Fourth Proportional to 678,499.44, 936,345.50 and 368,415.09
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Solution
The fourth proportional to 678,499.44, 936,345.50 and 368,415.09 is: 508,421.66
Step by Step Solution
- Step 1: Write the proportion equation
678,499.44 : 936,345.50 = 368,415.09 : x - Step 2: Convert to fraction form
678,499.44/936,345.50 = 368,415.09/x - Step 3: Cross multiply
678,499.44x = 936,345.50 × 368,415.09 - Step 4: Simplify right side
678,499.44x = 344,963,811,653.60 - Step 5: Solve for x
x = 344,963,811,653.60/678,499.44 - Step 6: Final answer
x = 508,421.66
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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.