Finding the Fourth Proportional to 1,214,742.48, 1,821,926.91 and 405,141.12
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Solution
The fourth proportional to 1,214,742.48, 1,821,926.91 and 405,141.12 is: 607,649.38
Step by Step Solution
- Step 1: Write the proportion equation
1,214,742.48 : 1,821,926.91 = 405,141.12 : x - Step 2: Convert to fraction form
1,214,742.48/1,821,926.91 = 405,141.12/x - Step 3: Cross multiply
1,214,742.48x = 1,821,926.91 × 405,141.12 - Step 4: Simplify right side
1,214,742.48x = 738,137,508,875.54 - Step 5: Solve for x
x = 738,137,508,875.54/1,214,742.48 - Step 6: Final answer
x = 607,649.38
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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.