Finding the Fourth Proportional to 3,929,979.12, 5,894,968.24 and 1,090,091.36
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Solution
The fourth proportional to 3,929,979.12, 5,894,968.24 and 1,090,091.36 is: 1,635,136.92
Step by Step Solution
- Step 1: Write the proportion equation
3,929,979.12 : 5,894,968.24 = 1,090,091.36 : x - Step 2: Convert to fraction form
3,929,979.12/5,894,968.24 = 1,090,091.36/x - Step 3: Cross multiply
3,929,979.12x = 5,894,968.24 × 1,090,091.36 - Step 4: Simplify right side
3,929,979.12x = 6,426,053,945,898.41 - Step 5: Solve for x
x = 6,426,053,945,898.41/3,929,979.12 - Step 6: Final answer
x = 1,635,136.92
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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.