Finding the Fourth Proportional to 1,432,879.53, 1,977,656.21 and 821,442.79
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Solution
The fourth proportional to 1,432,879.53, 1,977,656.21 and 821,442.79 is: 1,133,752.98
Step by Step Solution
- Step 1: Write the proportion equation
1,432,879.53 : 1,977,656.21 = 821,442.79 : x - Step 2: Convert to fraction form
1,432,879.53/1,977,656.21 = 821,442.79/x - Step 3: Cross multiply
1,432,879.53x = 1,977,656.21 × 821,442.79 - Step 4: Simplify right side
1,432,879.53x = 1,624,531,430,696.01 - Step 5: Solve for x
x = 1,624,531,430,696.01/1,432,879.53 - Step 6: Final answer
x = 1,133,752.98
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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.