Finding the Fourth Proportional to 678,567.78, 936,006.84 and 487,837.08
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Solution
The fourth proportional to 678,567.78, 936,006.84 and 487,837.08 is: 672,915.60
Step by Step Solution
- Step 1: Write the proportion equation
678,567.78 : 936,006.84 = 487,837.08 : x - Step 2: Convert to fraction form
678,567.78/936,006.84 = 487,837.08/x - Step 3: Cross multiply
678,567.78x = 936,006.84 × 487,837.08 - Step 4: Simplify right side
678,567.78x = 456,618,843,685.63 - Step 5: Solve for x
x = 456,618,843,685.63/678,567.78 - Step 6: Final answer
x = 672,915.60
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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.