Finding the Fourth Proportional to 612,457.19, 916,889.28 and 429,453.44
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Solution
The fourth proportional to 612,457.19, 916,889.28 and 429,453.44 is: 642,920.45
Step by Step Solution
- Step 1: Write the proportion equation
612,457.19 : 916,889.28 = 429,453.44 : x - Step 2: Convert to fraction form
612,457.19/916,889.28 = 429,453.44/x - Step 3: Cross multiply
612,457.19x = 916,889.28 × 429,453.44 - Step 4: Simplify right side
612,457.19x = 393,761,250,810.68 - Step 5: Solve for x
x = 393,761,250,810.68/612,457.19 - Step 6: Final answer
x = 642,920.45
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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.