Finding the Fourth Proportional to 778,440.18, 1,074,351.42 and 456,278.88
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Solution
The fourth proportional to 778,440.18, 1,074,351.42 and 456,278.88 is: 629,725.80
Step by Step Solution
- Step 1: Write the proportion equation
778,440.18 : 1,074,351.42 = 456,278.88 : x - Step 2: Convert to fraction form
778,440.18/1,074,351.42 = 456,278.88/x - Step 3: Cross multiply
778,440.18x = 1,074,351.42 × 456,278.88 - Step 4: Simplify right side
778,440.18x = 490,203,862,644.01 - Step 5: Solve for x
x = 490,203,862,644.01/778,440.18 - Step 6: Final answer
x = 629,725.80
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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.